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Area Code 240 Detail

State Major City Time Zone
Maryland Germantown Eastern (10:11PM)

Major Cities in Area Code 240

Prefix City 1 City 2 City 3 City 4 City 5
240Aspen Hill, MDBethesda, MDBowie, MDChillum, MDClinton, MD
240College Park, MDCumberland, MDFairland, MDFort Washington, MDFrederick, MD
240Gaithersburg, MDGermantown, MDGreenbelt, MDHagerstown, MDLandover, MD
240Montgomery Village, MDNorth Bethesda, MDNorth Laurel, MDNorth Potomac, MDOlney, MD
240Oxon Hill-glassmanor, MDPotomac, MDRockville, MDSilver Spring, MDSouth Laurel, MD
240St. Charles, MDSuitland, MDWaldorf, MDWheaton-glenmont, MDWhite Oak, MD

Aria Code 240 Prefixes

Prefix Primary City Company County Usage Introduced
240 - 200Mount Rainier, MDBandwidth.com Clec, LLC - MDPrince Georges CountyLandline Numbers10/04/2010
240 - 201Ridge, MDPeerless Network Of The District Of Columbia, DcSaint Marys CountyLandline Numbers07/22/1999
240 - 203Hagerstown, MDSprint Spectrum L.p. - MDWashington CountyWireless Numbers10/04/2011
240 - 204Bethesda, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers09/07/2011
240 - 205Cabin John, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers07/23/2003
240 - 206Glenn Dale, MDXo Maryland, LLCPrince Georges CountyLandline Numbers10/31/2001
240 - 207Damascus, MDCavalier East LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 208La Plata, MDPeerless Network Of The District Of Columbia, DcCharles CountyLandline Numbers07/22/1999
240 - 209Indian Head, MDPeerless Network Of The District Of Columbia, DcCharles CountyLandline Numbers07/22/1999
240 - 210Waldorf, MDNew Cingular Wireless PCS, LLC - DCCharles CountyWireless Numbers08/20/2000
240 - 212Oakland, MDCore Communications, Inc. - MDGarrett CountyLandline Numbers06/13/2000
240 - 213Waldorf, MDPeerless Network Of The District Of Columbia, DcCharles CountyLandline Numbers07/22/1999
240 - 214Mechanicsville, MDPeerless Network Of The District Of Columbia, DcSaint Marys CountyLandline Numbers07/22/1999
240 - 215Frederick, MDTelcove Operations, Inc. - MDFrederick CountyLandline Numbers01/14/2000
240 - 216Waldorf, MDSprint Spectrum L.p.Charles CountyWireless Numbers03/15/2001
240 - 217Hagerstown, MDOmnipoint Communications Cap Operations, LLCWashington CountyWireless Numbers04/16/2001
240 - 218Nanjemoy, MDPeerless Network Of The District Of Columbia, DcCharles CountyLandline Numbers02/27/1999
240 - 220Poolesville, MDPeerless Network Of Maryland, LLCMontgomery CountyLandline Numbers02/27/1999
240 - 221Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers05/10/1999
240 - 222Waldorf, MDCavalier Telephone Mid-atlantic, LLC - MDCharles CountyLandline Numbers08/20/2000
240 - 223Mount Rainier, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 224Gaithersburg, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers09/10/2012
240 - 225Frederick, MDCore Communications, Inc. - MDFrederick CountyLandline Numbers06/13/2000
240 - 228Laurel, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers11/20/1998
240 - 229Waldorf, MDBroadwing Communications. LLC - MDCharles CountyLandline Numbers07/22/1999
240 - 230Hughesville, MDGlobal Crossing Local Services, Inc.-mdCharles CountyLandline Numbers05/10/1999
240 - 231Hagerstown, MDCore Communications, Inc. - MDWashington CountyLandline Numbers06/13/2000
240 - 232Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 233Newburg, MDTeleport Communications America, LLC - DCCharles CountyLandline Numbers02/27/1999
240 - 234Mount Rainier, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers10/04/2011
240 - 235Bethesda, MDPaetec Communications, Inc. - MDMontgomery CountyLandline Numbers10/13/1999
240 - 236Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers06/13/2000
240 - 237Callaway, MDTeleport Communications America, LLC - DCSaint Marys CountyLandline Numbers02/27/1999
240 - 238Rockville, MDPaetec Communications, Inc. - MDMontgomery CountyLandline Numbers10/13/1999
240 - 239Leonardtown, MDCore Communications, Inc. - MDSaint Marys CountyLandline Numbers10/31/2000
240 - 241Chevy Chase, MDStarpower Communications, LLC - MDMontgomery CountyLandline Numbers02/27/1999
240 - 242Kensington, MDStarpower Communications, LLC - MDMontgomery CountyLandline Numbers02/27/1999
240 - 243Gaithersburg, MDAllegiance Telecom, Inc. - MDMontgomery CountyLandline Numbers01/14/2000
240 - 244Mount Rainier, MDStarpower Communications, LLC - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 245Glenn Dale, MDStarpower Communications, LLC - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 246Gaithersburg, MDStarpower Communications, LLC - MDMontgomery CountyLandline Numbers11/20/1998
240 - 247Mount Rainier, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 248Ridge, MDPeerless Network Of Maryland, LLCSaint Marys CountyLandline Numbers02/27/1999
240 - 249Mechanicsville, MDTeleport Communications America, LLC - DCSaint Marys CountyLandline Numbers02/27/1999
240 - 250Brandywine, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 251Highfield, MDCore Communications, Inc. - MDWashington CountyLandline Numbers06/13/2000
240 - 252Gaithersburg, MDLevel 3 Communications, LLC - MDMontgomery CountyLandline Numbers05/10/1999
240 - 253Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 254Hughesville, MDTeleport Communications America, LLC - DCCharles CountyLandline Numbers02/27/1999
240 - 255Poolesville, MDPeerless Network Of Maryland, LLCMontgomery CountyLandline Numbers07/22/1999
240 - 256Leonardtown, MDTeleport Communications America, LLC - DCSaint Marys CountyLandline Numbers02/27/1999
240 - 257Nanjemoy, MDTeleport Communications America, LLC - DCCharles CountyLandline Numbers02/27/1999
240 - 258Ridge, MDTeleport Communications America, LLC - DCSaint Marys CountyLandline Numbers02/27/1999
240 - 260Mount Rainier, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers06/13/2000
240 - 262Callaway, MDSprint Spectrum L.p.Saint Marys CountyWireless Numbers10/17/2011
240 - 263Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/10/2011
240 - 264Beltsville, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers02/27/1999
240 - 265Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/10/2011
240 - 266Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 268Rockville, MDAllegiance Telecom, Inc. - MDMontgomery CountyLandline Numbers02/27/1999
240 - 269Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 270Waldorf, MDCellco Partnership DBA Verizon Wireless - MDCharles CountyWireless Numbers11/07/2011
240 - 271Bethesda, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers02/27/1999
240 - 272Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/10/2011
240 - 273Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 274Bethesda, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers02/27/1999
240 - 275Grantsville, MDCore Communications, Inc. - MDGarrett CountyLandline Numbers10/31/2000
240 - 276Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers05/04/2004
240 - 277Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/18/2002
240 - 278Laurel, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers07/08/2011
240 - 279Waldorf, MDCore Communications, Inc. - MDCharles CountyLandline Numbers10/31/2000
240 - 280Laurel, MDComcast Phone Of Northern Maryland, Inc. - MDPrince Georges CountyLandline Numbers03/03/2001
240 - 281Bethesda, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers10/13/1999
240 - 282Mechanicsville, MDPeerless Network Of Maryland, LLCSaint Marys CountyLandline Numbers02/27/1999
240 - 283Kensington, MDPaetec Communications, Inc. - MDMontgomery CountyLandline Numbers10/13/1999
240 - 284Frostburg, MDLevel 3 Communications, LLC - MDAllegany CountyLandline Numbers11/01/2004
240 - 285Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyLandline Numbers06/13/2000
240 - 286Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers09/17/2002
240 - 287Hancock, MDCore Communications, Inc. - MDWashington CountyLandline Numbers06/13/2000
240 - 288Thurmont, MDComcast Phone Of Northern Maryland, Inc. - MDFrederick CountyLandline Numbers11/01/2004
240 - 289Oxon Hill, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 290Mount Rainier, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 291Hagerstown, MDNew Cingular Wireless PCS, LLC - DCWashington CountyWireless Numbers10/15/2002
240 - 292Kensington, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers10/13/1999
240 - 293Mount Rainier, MDStarpower Communications, LLC - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 294Laurel, MDXo Maryland, LLCPrince Georges CountyLandline Numbers06/30/2001
240 - 295Laurel, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 296Hyattsville, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 297College Park, MDLevel 3 Communications, LLC - MDPrince Georges CountyLandline Numbers10/13/1999
240 - 298Leonardtown, MDCellco Partnership DBA Verizon Wireless - MDSaint Marys CountyWireless Numbers10/13/1999
240 - 299Waldorf, MDSprint Spectrum L.p.Charles CountyWireless Numbers10/13/1999
240 - 300Waldorf, MDCellco Partnership DBA Verizon Wireless - MDCharles CountyWireless Numbers12/07/2010
240 - 303Clinton, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 304Mount Rainier, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/03/2002
240 - 305Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers02/27/1999
240 - 306Gaithersburg, MDAllegiance Telecom, Inc. - MDMontgomery CountyLandline Numbers06/13/2000
240 - 307Emmitsburg, MDAT&T LocalFrederick CountyLandline Numbers03/27/2003
240 - 308Damascus, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers08/20/2000
240 - 309Leonardtown, MDCellco Partnership DBA Verizon Wireless - MDSaint Marys CountyWireless Numbers09/10/2012
240 - 310Hagerstown, MDUscoc Of Cumberland, Inc. DBA United States Cel MdWashington CountyWireless Numbers02/27/1999
240 - 312Capitol Heights, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 313Hagerstown, MDVerizon Maryland, Inc.Washington CountyLandline Numbers10/31/2000
240 - 314Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers06/13/2000
240 - 315Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers08/20/2000
240 - 316Chevy Chase, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers
240 - 317Callaway, MDStarpower Communications, LLC - MDSaint Marys CountyLandline Numbers11/20/1998
240 - 318Clinton, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 319Columbia, MDCellco Partnership DBA Verizon Wireless - MDHoward CountyWireless Numbers06/06/2008
240 - 320Waldorf, MDCavalier East LLC - MDCharles CountyLandline Numbers10/31/2000
240 - 321Oakland, MDUscoc Of Cumberland, Inc. DBA United States Cel MdGarrett CountyWireless Numbers02/27/1999
240 - 322Mccoole, MDCore Communications, Inc. - MDAllegany CountyLandline Numbers10/31/2000
240 - 323Emmitsburg, MDCore Communications, Inc. - MDFrederick CountyLandline Numbers10/31/2000
240 - 324Clarksville, MDYmax Communications Corp. - MDHoward CountyLandline Numbers10/08/2008
240 - 325Damascus, MDCore Communications, Inc. - MDMontgomery CountyLandline Numbers10/31/2000
240 - 326Upper Marlboro, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 327Gaithersburg, MDCore Communications, Inc. - MDMontgomery CountyLandline Numbers10/31/2000
240 - 328Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers08/20/2000
240 - 329Hagerstown, MDLevel 3 Communications, LLC - MDWashington CountyLandline Numbers10/31/2000
240 - 330Cabin John, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers12/14/2007
240 - 331Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 332Newburg, MDPeerless Network Of Maryland, LLCCharles CountyLandline Numbers02/27/1999
240 - 333Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 334Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 335Glenn Dale, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 336Bethesda, MDCore Communications, Inc. - MDMontgomery CountyLandline Numbers10/31/2000
240 - 337Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 338Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers01/14/2000
240 - 339Upper Marlboro, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 340Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers08/18/2011
240 - 341Adamstown, MDMci Worldcom Communications, Inc. - MDFrederick CountyLandline Numbers02/25/2009
240 - 342Sandy Spring, MDStarpower Communications, LLC - MDMontgomery CountyLandline Numbers11/20/1998
240 - 343Hancock, MDCellco Partnership DBA Verizon Wireless - MDWashington CountyWireless Numbers05/10/2011
240 - 344Frederick, MDNew Cingular Wireless PCS, LLC - DCFrederick CountyWireless Numbers10/15/2002
240 - 345Sandy Spring, MDLevel 3 Communications, LLC - MDMontgomery CountyLandline Numbers03/09/2006
240 - 346Waldorf, MDSprint Spectrum L.p.Charles CountyWireless Numbers08/20/2000
240 - 347Hagerstown, MDBandwidth.com Clec, LLC - MDWashington CountyLandline Numbers08/04/2008
240 - 348Oxon Hill, MDLevel 3 Communications, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 349La Plata, MDGlobal Crossing Local Services, Inc.-mdCharles CountyLandline Numbers05/10/1999
240 - 350Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers05/10/1999
240 - 351Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers05/10/1999
240 - 352La Plata, MDPeerless Network Of Maryland, LLCCharles CountyLandline Numbers02/27/1999
240 - 353Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers05/10/1999
240 - 354Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers05/10/1999
240 - 355Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers05/10/1999
240 - 356Frederick, MDLevel 3 Communications, LLC - MDFrederick CountyLandline Numbers03/03/2001
240 - 357Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers06/12/2006
240 - 358Damascus, MDPeerless Network Of Maryland, LLCMontgomery CountyLandline Numbers02/27/1999
240 - 359Indian Head, MDPeerless Network Of Maryland, LLCCharles CountyLandline Numbers02/27/1999
240 - 360Laurel, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers09/17/2013
240 - 361Gaithersburg, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 362Cumberland, MDVerizon Maryland, Inc.Allegany CountyLandline Numbers02/27/1999
240 - 363Kensington, MDGlobal Naps South, Inc. - MDMontgomery CountyLandline Numbers02/27/1999
240 - 364Gaithersburg, MDCavalier East LLC - MDMontgomery CountyLandline Numbers05/09/2001
240 - 365Damascus, MDBaltimore-washington Telephone (bwt)Montgomery CountyLandline Numbers08/20/2000
240 - 366Williamsport, MDAT&T LocalWashington CountyLandline Numbers03/03/2001
240 - 367Frederick, MDSprint Spectrum L.p.Frederick CountyWireless Numbers10/18/2002
240 - 368Waldorf, MDPeerless Network Of Maryland, LLCCharles CountyLandline Numbers02/27/1999
240 - 369Mount Airy, MDCore Communications, Inc. - MDCarroll CountyLandline Numbers10/31/2000
240 - 370Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers12/14/2007
240 - 371Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 372Gaithersburg, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/13/1999
240 - 373Odenton, MDVerizon Maryland, Inc.Anne Arundel CountyLandline Numbers11/20/1998
240 - 374Laurel, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 375Capitol Heights, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers11/20/1998
240 - 376Hughesville, MDPeerless Network Of Maryland, LLCCharles CountyLandline Numbers02/27/1999
240 - 377Indian Head, MDGlobal Crossing Local Services, Inc.-mdCharles CountyLandline Numbers05/10/1999
240 - 378Cumberland, MDCore Communications, Inc. - MDAllegany CountyLandline Numbers10/31/2000
240 - 379Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers03/03/2001
240 - 380Cabin John, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers09/17/2007
240 - 381Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers01/14/2000
240 - 382Hagerstown, MDTeleport Communications America, LLC - MDWashington CountyLandline Numbers06/11/2009
240 - 383Chevy Chase, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers08/20/2000
240 - 384Callaway, MDPeerless Network Of Maryland, LLCSaint Marys CountyLandline Numbers02/27/1999
240 - 385Myersville, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers10/31/2000
240 - 386Gaithersburg, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers08/20/2000
240 - 387Chevy Chase, MDCavalier East LLC - MDMontgomery CountyLandline Numbers01/14/2000
240 - 388Gaithersburg, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/04/2002
240 - 389Sandy Spring, MDAtx Telecommunications Services, LtdMontgomery CountyLandline Numbers06/30/2001
240 - 390Sandy Spring, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 391Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 392Oxon Hill, MDStarpower Communications, LLC - MDPrince Georges CountyLandline Numbers02/27/1999
240 - 393Cabin John, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers06/13/2000
240 - 394Mount Airy, MDNew Cingular Wireless PCS, LLC - DCCarroll CountyWireless Numbers12/13/2004
240 - 395Bethesda, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 396Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 397Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers03/06/2009
240 - 398Cabin John, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers07/03/2002
240 - 399Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/13/1999
240 - 400Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers08/18/2011
240 - 401Rockville, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers11/20/1998
240 - 402College Park, MDMci Worldcom Communications, Inc. - MDPrince Georges CountyLandline Numbers09/21/2010
240 - 403Rockville, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 404Gaithersburg, MDXo Maryland, LLCMontgomery CountyLandline Numbers02/13/2001
240 - 405Frederick, MDUs Lec Of Maryland, Inc.Frederick CountyLandline Numbers07/27/2004
240 - 406Rockville, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers09/17/2009
240 - 407Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 408Rockville, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers10/14/2009
240 - 409Frederick, MDNew Cingular Wireless PCS, LLC - DCFrederick CountyWireless Numbers02/27/1999
240 - 412Waldorf, MDSprint Spectrum L.p.Charles CountyWireless Numbers01/16/2001
240 - 413Hyattsville, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers03/12/2001
240 - 414Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 415Frederick, MDYmax Communications Corp. - MDFrederick CountyLandline Numbers12/16/2008
240 - 416Waldorf, MDNew Cingular Wireless PCS, LLC - DCCharles CountyWireless Numbers05/18/2001
240 - 417Capitol Heights, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers03/03/2001
240 - 418Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers11/12/2001
240 - 419Waldorf, MDCellco Partnership DBA Verizon Wireless - MDCharles CountyWireless Numbers10/29/2007
240 - 420Hagerstown, MDVerizon Maryland, Inc.Washington CountyLandline Numbers07/22/1999
240 - 421Rockville, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers04/09/2001
240 - 422Frederick, MDOmnipoint Communications Cap Operations, LLCFrederick CountyWireless Numbers05/15/2002
240 - 423Silver Spring, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers05/21/2001
240 - 424Mount Rainier, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers11/16/2007
240 - 425Cabin John, MDDslnet Communications Va, Inc. - MDMontgomery CountyLandline Numbers01/25/2001
240 - 426Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/25/2001
240 - 427Waldorf, MDXo Maryland, LLCCharles CountyLandline Numbers04/23/2001
240 - 428Rockville, MDBandwidth.com Clec, LLC - MDMontgomery CountyLandline Numbers10/14/2009
240 - 429Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers12/19/2006
240 - 430Kensington, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 431Tall Timbers, MDSprint Spectrum L.p.Saint Marys CountyWireless Numbers10/31/2000
240 - 432Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers02/27/1999
240 - 433Silver Spring, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 434Leonardtown, MDBroadwing Communications. LLC - MDSaint Marys CountyLandline Numbers10/31/2000
240 - 435Waldorf, MDCellco Partnership DBA Verizon Wireless - MDCharles CountyWireless Numbers05/07/2009
240 - 436Ijamsville, MDTelcove Operations, Inc. - MDFrederick CountyLandline Numbers08/20/2000
240 - 437Sandy Spring, MDXo Maryland, LLCMontgomery CountyLandline Numbers06/30/2001
240 - 438Silver Spring, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers08/15/2011
240 - 439Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers06/06/2008
240 - 440Frederick, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Frederick CountyWireless Numbers02/27/2009
240 - 441Oxon Hill, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers06/06/2001
240 - 442Oakland, MDVerizon Maryland, Inc.Garrett CountyLandline Numbers05/22/2001
240 - 444Laurel, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers09/07/2011
240 - 445Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/10/2011
240 - 446Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers08/09/2001
240 - 447Rockville, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers02/27/1999
240 - 448Waldorf, MDSprint Spectrum L.p.Charles CountyWireless Numbers09/07/2011
240 - 449Gaithersburg, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers03/03/2001
240 - 450Silver Spring, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers08/20/2000
240 - 452Hagerstown, MDLumos Networks Inc. - VAWashington CountyLandline Numbers07/22/2010
240 - 453Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers11/20/1998
240 - 454Gaithersburg, MDPaetec Communications, Inc. - MDMontgomery CountyWireless Numbers04/22/2005
240 - 455Oxon Hill, MDPaetec Communications, Inc. - MDPrince Georges CountyLandline Numbers06/20/2001
240 - 456Laurel, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers08/20/2000
240 - 457Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers09/04/2008
240 - 458Waldorf, MDCellco Partnership DBA Verizon Wireless - MDCharles CountyWireless Numbers10/04/2011
240 - 459Laurel, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers07/27/2010
240 - 460Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers07/22/1999
240 - 461Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers07/22/1999
240 - 462Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers02/27/1999
240 - 463Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers02/27/1999
240 - 464Chevy Chase, MDSprint Spectrum L.p.Montgomery CountyLandline Numbers05/10/1999
240 - 465Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 466Mechanicsville, MDNew Cingular Wireless PCS, LLC - DCSaint Marys CountyWireless Numbers10/31/2001
240 - 467Oxon Hill, MDComcast Phone Of Northern Maryland, Inc. - MDPrince Georges CountyLandline Numbers04/25/2013
240 - 468Mount Rainier, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers11/16/2007
240 - 469Hagerstown, MDSprint Spectrum L.p. - MDWashington CountyWireless Numbers02/14/2008
240 - 470Laurel, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers10/04/2011
240 - 471Silver Spring, MDGlobal Crossing Local Services, Inc.-mdMontgomery CountyLandline Numbers02/27/1999
240 - 472Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers08/20/2000
240 - 473College Park, MDCavalier Telephone Mid-atlantic, LLC - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 475Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers08/20/2000
240 - 476Silver Spring, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers02/21/2001
240 - 477Gaithersburg, MDLightwave Communications, LLC - MDMontgomery CountyLandline Numbers05/20/2005
240 - 478Cabin John, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers07/27/2004
240 - 479Oxon Hill, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers04/07/2008
240 - 480Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers09/27/2010
240 - 481Silver Spring, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers05/11/2001
240 - 482Cabin John, MDUs Lec Of Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 483Oxon Hill, MDComcast Phone Of Northern Maryland, Inc. - MDPrince Georges CountyLandline Numbers10/31/2001
240 - 485Cabin John, MDUs Lec Of Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 486Glenn Dale, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers03/12/2001
240 - 487Hyattsville, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 488Oakland, MDShentel Communications, LLC - MDGarrett CountyLandline Numbers05/16/2012
240 - 489Poolesville, MDXo Maryland, LLCMontgomery CountyLandline Numbers02/13/2001
240 - 490Middletown, MDOmnipoint Communications Cap Operations, LLCFrederick CountyWireless Numbers06/12/2001
240 - 491Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 492Capitol Heights, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 493Oxon Hill, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 494Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 495Mount Rainier, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers10/29/2013
240 - 497Chevy Chase, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers10/31/2000
240 - 498Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers10/31/2000
240 - 499Cabin John, MDUs Lec Of Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 500Hagerstown, MDUs Lec Of Maryland, Inc.Washington CountyLandline Numbers10/21/2010
240 - 501Silver Spring, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/08/2001
240 - 502Silver Spring, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/04/2011
240 - 503Newburg, MDPeerless Network Of Maryland, LLCCharles CountyLandline Numbers04/09/2013
240 - 504Silver Spring, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/04/2011
240 - 505Silver Spring, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers10/31/2001
240 - 506Rockville, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers01/09/2002
240 - 507Cabin John, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers09/05/2008
240 - 508Capitol Heights, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers02/27/1999
240 - 509Crofton, MDBandwidth.com Clec, LLC - MDAnne Arundel CountyLandline Numbers03/31/2008
240 - 510Upper Marlboro, MDXo Maryland, LLCPrince Georges CountyLandline Numbers10/31/2001
240 - 512College Park, MDCore Communications, Inc. - MDPrince Georges CountyLandline Numbers08/08/2006
240 - 513Hagerstown, MDSprint Spectrum L.p. - MDWashington CountyWireless Numbers10/19/2011
240 - 514Cabin John, MDUs Lec Of Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 515Bethesda, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers06/20/2001
240 - 516Silver Spring, MDUs Lec Of Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 518Waldorf, MDSprint Spectrum L.p.Charles CountyWireless Numbers10/21/2011
240 - 519Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/10/2011
240 - 520Hagerstown, MDSprint Spectrum L.p. - MDWashington CountyWireless Numbers03/29/2006
240 - 522Cumberland, MDSprint Spectrum L.p.Allegany CountyWireless Numbers12/12/2001
240 - 523La Plata, MDXo Maryland, LLCCharles CountyLandline Numbers02/13/2001
240 - 524Laurel, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 525Upper Marlboro, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 526Leonardtown, MDPeerless Network Of Maryland, LLCSaint Marys CountyLandline Numbers02/27/1999
240 - 527Hagerstown, MDVerizon Maryland, Inc.Washington CountyLandline Numbers10/31/2000
240 - 528Hughesville, MDBroadwing Communications. LLC - MDCharles CountyLandline Numbers10/31/2000
240 - 529Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers10/31/2000
240 - 530Waldorf, MDLocal Access LLC - MDCharles CountyLandline Numbers08/01/2013
240 - 532Oxon Hill, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers10/29/2013
240 - 533Mount Rainier, MDTeleport Communications America, LLC - DCPrince Georges CountyLandline Numbers07/22/1999
240 - 535Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers01/09/2001
240 - 536Sandy Spring, MDPeerless Network Of Maryland, LLCMontgomery CountyLandline Numbers02/27/1999
240 - 538Leonardtown, MDXo Maryland, LLCSaint Marys CountyLandline Numbers02/13/2001
240 - 539Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers02/27/1999
240 - 541Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/31/2011
240 - 542College Park, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 543Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers07/25/2006
240 - 544Glenn Dale, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 545Upper Marlboro, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 546Clinton, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers01/14/2000
240 - 547Laurel, MDLevel 3 Communications, LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 548Mount Rainier, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 550Rockville, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers03/26/2009
240 - 551Rockville, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers03/25/2009
240 - 552Rockville, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers03/25/2009
240 - 553Mount Rainier, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers08/20/2000
240 - 554Laurel, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 556Glenn Dale, MDPaetec Communications, Inc. - MDPrince Georges CountyLandline Numbers10/31/2001
240 - 558Kensington, MDCavalier Telephone Mid-atlantic, LLC - MDMontgomery CountyLandline Numbers06/30/2001
240 - 559Sandy Spring, MDAllegiance Telecom, Inc. - MDMontgomery CountyLandline Numbers10/31/2000
240 - 560Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers04/23/2001
240 - 561Leonardtown, MDCellco Partnership DBA Verizon Wireless - MDSaint Marys CountyWireless Numbers07/07/2008
240 - 565Laurel, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers12/30/2005
240 - 566Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers06/11/2002
240 - 567Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers07/12/2006
240 - 568Laurel, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers07/22/1999
240 - 573Upper Marlboro, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers07/22/1999
240 - 575Frederick, MDLevel 3 Communications, LLC - MDFrederick CountyLandline Numbers12/30/2005
240 - 577Leonardtown, MDCellco Partnership DBA Verizon Wireless - MDSaint Marys CountyWireless Numbers08/09/2006
240 - 578Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers07/08/2011
240 - 580Cumberland, MDSprint Spectrum L.p.Allegany CountyWireless Numbers06/14/2001
240 - 581Laurel, MDPaetec Communications, Inc. - DCPrince Georges CountyLandline Numbers03/03/2001
240 - 582Hyattsville, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers07/22/1999
240 - 583Beltsville, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers04/28/2010
240 - 585Waldorf, MDCellco Partnership DBA Verizon Wireless - MDCharles CountyWireless Numbers06/29/2011
240 - 586Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers12/22/2006
240 - 587Leonardtown, MDCellco Partnership DBA Verizon Wireless - MDSaint Marys CountyWireless Numbers07/06/2009
240 - 593Laurel, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers03/13/2001
240 - 595Chevy Chase, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers09/13/2006
240 - 597Gaithersburg, MDPeerless Network Of Maryland, LLCMontgomery CountyLandline Numbers02/27/1999
240 - 599Rockville, MDBroadwing Communications. LLC - MDMontgomery CountyLandline Numbers07/22/1999
240 - 600Mount Rainier, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers04/27/2011
240 - 601Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/22/1999
240 - 602Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/22/1999
240 - 603Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/22/1999
240 - 604Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/22/1999
240 - 605Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/22/1999
240 - 606Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers07/22/1999
240 - 607Waldorf, MDGlobal Crossing Local Services, Inc.-mdCharles CountyLandline Numbers05/10/1999
240 - 608Frederick, MD365 Wireless, LLCFrederick CountyWireless Numbers03/11/2013
240 - 612Mount Rainier, MDTw Telecom Of Maryland LLC - MDPrince Georges CountyLandline Numbers08/04/2010
240 - 613Hyattsville, MDUs Lec Of Maryland, Inc.Prince Georges CountyLandline Numbers04/05/2012
240 - 614Rockville, MDMetro PCS, Inc.Montgomery CountyWireless Numbers07/16/2013
240 - 615Hyattsville, MDMetro PCS, Inc.Prince Georges CountyWireless Numbers05/29/2013
240 - 616College Park, MDMci Worldcom Communications, Inc. - MDPrince Georges CountyLandline Numbers06/30/2001
240 - 617Shentel Communications, LLC - MD05/12/2014
240 - 619Chevy Chase, MDMci Worldcom Communications, Inc. - MDMontgomery CountyLandline Numbers08/20/2000
240 - 620Rockville, MDMci Worldcom Communications, Inc. - MDMontgomery CountyLandline Numbers08/20/2000
240 - 621Kensington, MDMci Worldcom Communications, Inc. - MDMontgomery CountyLandline Numbers08/20/2000
240 - 624Greenbelt, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers06/13/2000
240 - 625Hagerstown, MDSprint Spectrum L.p.Washington CountyWireless Numbers04/17/2001
240 - 626Frederick, MDSprint Spectrum L.p.Frederick CountyWireless Numbers05/10/1999
240 - 627Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 629Frederick, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers10/13/1999
240 - 630Mount Rainier, MDBandwidth.com Clec, LLC - MDPrince Georges CountyLandline Numbers10/31/2011
240 - 631Gaithersburg, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers11/20/1998
240 - 632Gaithersburg, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers07/22/1999
240 - 638Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 640Waldorf, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Charles CountyWireless Numbers03/24/2009
240 - 643Silver Spring, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers05/16/2002
240 - 644Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 645Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 646Laurel, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers10/13/1999
240 - 650Cabin John, MDBroadvox-clec - DCMontgomery CountyLandline Numbers11/17/2011
240 - 651Frederick, MDHalo Wireless Services, Inc.Frederick CountyWireless Numbers11/28/2011
240 - 652Mechanicsville, MDXo Maryland, LLCSaint Marys CountyLandline Numbers02/13/2001
240 - 654Gaithersburg, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers05/19/2006
240 - 662Silver Spring, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 667Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 668Damascus, MDStarpower Communications, LLC - MDMontgomery CountyLandline Numbers11/20/1998
240 - 669Kensington, MDComcast Phone Of Northern Maryland, Inc. - MDMontgomery CountyLandline Numbers10/31/2000
240 - 670Mount Rainier, MDLocal Access LLC - MDPrince Georges CountyLandline Numbers03/06/2012
240 - 671Mount Rainier, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers10/31/2000
240 - 672Rockville, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyLandline Numbers10/31/2000
240 - 674Frederick, MDSprint Spectrum L.p.Frederick CountyWireless Numbers10/13/1999
240 - 675Myersville, MDNew Cingular Wireless PCS, LLC - DCFrederick CountyWireless Numbers05/10/1999
240 - 676Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers02/27/1999
240 - 678Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers02/27/1999
240 - 682Waldorf, MDStarpower Communications, LLC - MDCharles CountyLandline Numbers11/20/1998
240 - 683Gaithersburg, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers03/03/2001
240 - 684Greenbelt, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers10/31/2000
240 - 685Brandywine, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers05/10/1999
240 - 686Gaithersburg, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers03/03/2001
240 - 687Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers02/27/1999
240 - 688Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers06/12/2006
240 - 691Mount Rainier, MDGlobal Crossing Local Services, Inc.-mdPrince Georges CountyLandline Numbers02/27/1999
240 - 694Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers11/20/1998
240 - 695Temple Hills, MDVerizon Maryland, Inc.Prince Georges CountyLandline Numbers11/20/1998
240 - 696Hyattsville, MDLevel 3 Communications, LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 699Adamstown, MDVerizon Maryland, Inc.Frederick CountyLandline Numbers05/22/2001
240 - 701Silver Spring, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers03/25/2009
240 - 704Mount Rainier, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Prince Georges CountyWireless Numbers03/25/2009
240 - 705Chevy Chase, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers03/25/2009
240 - 706Chevy Chase, MDLeap Wireless Intl, Inc. DBA Cricket Comm, Inc.Montgomery CountyWireless Numbers03/26/2009
240 - 707Hagerstown, MDNew Cingular Wireless PCS, LLC - DCWashington CountyWireless Numbers01/27/2012
240 - 708Columbia, MDLevel 3 Communications, LLC - MDHoward CountyWireless Numbers06/08/2012
240 - 712Columbia, MDCellco Partnership DBA Verizon Wireless - MDHoward CountyWireless Numbers11/01/2011
240 - 713Laurel, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers11/02/2011
240 - 715Rockville, MDGlobal Crossing Local Services, Inc.-mdMontgomery CountyLandline Numbers02/27/1999
240 - 716Mount Rainier, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers11/15/2013
240 - 718Callaway, MDXo Maryland, LLCSaint Marys CountyLandline Numbers02/13/2001
240 - 720Gaithersburg, MDGlobal Crossing Local Services, Inc.-mdMontgomery CountyLandline Numbers02/27/1999
240 - 722Sandy Spring, MDGlobal Crossing Local Services, Inc.-mdMontgomery CountyLandline Numbers02/27/1999
240 - 723Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyLandline Numbers05/10/1999
240 - 724Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 725Lexington Park, MDVerizon Maryland, Inc.Saint Marys CountyLandline Numbers11/20/1998
240 - 727Cumberland, MDNew Cingular Wireless PCS, LLC - DCAllegany CountyWireless Numbers07/22/1999
240 - 731Rockville, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers10/31/2000
240 - 734Hagerstown, MDBandwidth.com Clec, LLC - MDWashington CountyLandline Numbers03/22/2012
240 - 737Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 743Oxon Hill, MDLocal Access LLC - MDPrince Georges CountyLandline Numbers11/16/2006
240 - 744Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 745Damascus, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2001
240 - 747Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 750Gaithersburg, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers05/06/2005
240 - 751Gaithersburg, MDTelcove Operations, Inc. - MDMontgomery CountyLandline Numbers08/20/2000
240 - 752Bethesda, MDTelcove Operations, Inc. - MDMontgomery CountyLandline Numbers08/20/2000
240 - 753Rockville, MDTelcove Operations, Inc. - MDMontgomery CountyLandline Numbers08/20/2000
240 - 754Waldorf, MDLevel 3 Communications, LLC - MDCharles CountyLandline Numbers11/11/2011
240 - 755Laurel, MDComcast Phone Of Northern Maryland, Inc. - MDPrince Georges CountyLandline Numbers01/05/2006
240 - 757Mount Rainier, MDPeerless Network Of Maryland, LLCPrince Georges CountyLandline Numbers07/22/1999
240 - 762Mount Rainier, MDCellco Partnership DBA Verizon Wireless - MDPrince Georges CountyWireless Numbers08/22/2012
240 - 764Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 765Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 766Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 767Capitol Heights, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 770Oxon Hill, MDComcast Phone Of Northern Maryland, Inc. - MDPrince Georges CountyLandline Numbers11/22/2004
240 - 772Frederick, MDCellco Partnership DBA Verizon Wireless - MDFrederick CountyWireless Numbers11/17/2011
240 - 773Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers10/13/1999
240 - 776La Plata, MDBroadwing Communications. LLC - MDCharles CountyLandline Numbers05/10/1999
240 - 777Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers05/10/1999
240 - 778Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 779Sandy Spring, MDCavalier East LLC - MDMontgomery CountyLandline Numbers10/31/2000
240 - 780Gaithersburg, MDBroadwing Communications. LLC - MDMontgomery CountyLandline Numbers05/10/1999
240 - 782Damascus, MDGlobal Crossing Local Services, Inc.-mdMontgomery CountyLandline Numbers05/10/1999
240 - 783Bethesda, MDMte, Inc. DBA Mte Paging NetworkMontgomery CountyWireless Numbers05/10/1999
240 - 784Myersville, MDOmnipoint Communications Cap Operations, LLCFrederick CountyWireless Numbers06/06/2001
240 - 786Laurel, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 787Brandywine, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 788Oxon Hill, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 790Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 793Gaithersburg, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers03/15/2001
240 - 794Callaway, MDBroadwing Communications. LLC - MDSaint Marys CountyLandline Numbers05/10/1999
240 - 800Chevy Chase, MDCore Communications, Inc. - MDMontgomery CountyLandline Numbers06/22/2012
240 - 801Gaithersburg, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers10/04/2013
240 - 802Bethesda, MD365 Wireless, LLCMontgomery CountyWireless Numbers05/10/2013
240 - 803Cumberland, MDNew Cingular Wireless PCS, LLC - DCAllegany CountyWireless Numbers01/27/2012
240 - 804Newburg, MDXo Maryland, LLCCharles CountyLandline Numbers04/23/2001
240 - 812Poolesville, MDGlobal Crossing Local Services, Inc.-mdMontgomery CountyLandline Numbers05/10/1999
240 - 813Gaithersburg, MDAtx Telecommunications Services, LtdMontgomery CountyLandline Numbers06/30/2001
240 - 818Smithsburg, MDVerizon Maryland, Inc.Washington CountyLandline Numbers10/13/1999
240 - 821Silver Spring, MDLightwave Communications, LLC - MDMontgomery CountyLandline Numbers05/27/2005
240 - 823Brandywine, MDXo Maryland, LLCPrince Georges CountyLandline Numbers02/13/2001
240 - 826Rockville, MDVerizon Maryland, Inc.Montgomery CountyLandline Numbers05/07/2007
240 - 832Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers05/10/1999
240 - 833Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 837Hughesville, MDXo Maryland, LLCCharles CountyLandline Numbers02/13/2001
240 - 838Oxon Hill, MDOmnipoint Communications Cap Operations, LLCPrince Georges CountyWireless Numbers03/12/2001
240 - 839Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers01/13/2007
240 - 841Laurel, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 842Glenn Dale, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 843College Park, MDAllegiance Telecom, Inc. - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 844Ridge, MDXo Maryland, LLCSaint Marys CountyLandline Numbers02/13/2001
240 - 845Chevy Chase, MDXo Maryland, LLCMontgomery CountyLandline Numbers10/31/2000
240 - 846Clinton, MDXo Maryland, LLCPrince Georges CountyLandline Numbers10/31/2000
240 - 848Gaithersburg, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers03/03/2001
240 - 855Cabin John, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers10/09/2006
240 - 857Mount Rainier, MDTw Telecom Of Maryland LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 863Laurel, MDTw Telecom Of Maryland LLC - MDPrince Georges CountyLandline Numbers05/10/1999
240 - 864Rockville, MDCavalier East LLC - MDMontgomery CountyLandline Numbers05/09/2001
240 - 865Baltimore, MDLevel 3 Communications, LLC - MDAnne Arundel CountyLandline Numbers03/03/2001
240 - 868Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 876Bethesda, MDSprint Spectrum L.p.Montgomery CountyWireless Numbers11/20/1998
240 - 880Chevy Chase, MDBroadwing Communications. LLC - MDMontgomery CountyLandline Numbers07/22/1999
240 - 882Capitol Heights, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers11/20/1998
240 - 883Sandy Spring, MDBroadwing Communications. LLC - MDMontgomery CountyLandline Numbers07/22/1999
240 - 888Rockville, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers03/03/2001
240 - 892Upper Marlboro, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 893Silver Spring, MDNew Cingular Wireless PCS, LLC - DCMontgomery CountyWireless Numbers03/03/2001
240 - 895Lexington Park, MDVerizon Maryland, Inc.Saint Marys CountyLandline Numbers06/30/2001
240 - 897Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 898Mount Rainier, MDBroadwing Communications. LLC - MDPrince Georges CountyLandline Numbers07/22/1999
240 - 899Bethesda, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers03/13/2001
240 - 901Centurylink Communications LLC05/22/2014
240 - 903Indian Head, MDComcast Phone Of Northern Maryland, Inc. - MDCharles CountyLandline Numbers12/03/2013
240 - 912Gaithersburg, MDUs Lec Of Maryland, Inc.Montgomery CountyLandline Numbers01/14/2000
240 - 920Cumberland, MDLevel 3 Communications, LLC - MDAllegany CountyLandline Numbers05/03/2001
240 - 925Leonardtown, MDCellco Partnership DBA Verizon Wireless - MDSaint Marys CountyWireless Numbers08/09/2001
240 - 929Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers10/13/1999
240 - 938Ashton, MDOmnipoint Communications Cap Operations, LLCMontgomery CountyWireless Numbers06/06/2001
240 - 949Mount Rainier, MDCavalier East LLC - MDPrince Georges CountyLandline Numbers05/09/2001
240 - 964Cumberland, MDVerizon Maryland, Inc.Allegany CountyLandline Numbers05/27/2008
240 - 965College Park, MDPaetec Communications, Inc. - MDPrince Georges CountyLandline Numbers10/31/2000
240 - 976Baltimore-washington Telephone (bwt)10/17/2005
240 - 979Cumberland, MDLevel 3 Communications, LLC - MDAllegany CountyLandline Numbers03/03/2001
240 - 986Nanjemoy, MDXo Maryland, LLCCharles CountyLandline Numbers02/13/2001
240 - 988Beltsville, MDSprint Spectrum L.p.Prince Georges CountyWireless Numbers05/10/1999
240 - 993Indian Head, MDXo Maryland, LLCCharles CountyLandline Numbers02/13/2001
240 - 994Rockville, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers10/13/1999
240 - 997Silver Spring, MDCellco Partnership DBA Verizon Wireless - MDMontgomery CountyWireless Numbers10/13/1999