Trace the Origin of Any Area Code (240) Phone Number

Area Code (240)

Area Code:240
State: Maryland (MD)
Country:USA
Top Cities:Mount Rainier, Silver Spring, Rockville, Frederick, Gaithersburg, Bethesda, Waldorf, Laurel, Chevy Chase and Beltsville
Total Cities:59
Total Counties:11
Total Prefixes:518

Area Code (240) serves 59 Cities:

Adamstown, Ashton, Baltimore, Beltsville, Bethesda, Brandywine, Cabin John, Callaway, Capitol Heights, Chevy Chase, Clarksville, Clinton, College Park, Columbia, Crofton, Cumberland, Damascus, Emmitsburg, Frederick, Frostburg, Gaithersburg, Glenn Dale, Grantsville, Greenbelt, Hagerstown, Hancock, Highfield, Hughesville, Hyattsville, Ijamsville, Indian Head, Kensington, La Plata, Laurel, Leonardtown, Lexington Park, Mccoole, Mechanicsville, Middletown, Mount Airy, Mount Rainier, Myersville, Nanjemoy, Newburg, Oakland, Odenton, Oxon Hill, Poolesville, Ridge, Rockville, Sandy Spring, Silver Spring, Smithsburg, Tall Timbers, Temple Hills, Thurmont, Upper Marlboro, Waldorf and Williamsport in the state of Maryland, USA.

Area Code (240) Maryland Counties:

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