Colorado 市外局番: 303
Note：303 市外局番は Colorado, アメリカ合衆国. 国際番号は 001303 or 001-303、0010303、+1-303、+1+303、+1303、00-1-303、00 1 303.
More About Area Code 303
Area Code 303 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the entire state of Colorado. In 1995, area code 303 was split, and some of the phone numbers had to be updated to area code 970 on that date. In 1998, area code 720 was created as an overlay to area code 303. Currently, the largest city it serves is Denver, CO, and it overlaps coverage areas with area code 720.
Active Phone Number Prefixes
| Prefix | Usage | Primary City | Carrier |
| (303) 200- | Landline | Denver | Teleport Communications America |
| (303) 201- | Wireless | Denver | Usa Mobility Wireless |
| (303) 202- | Landline | Denver | Qwest Corporation |
| (303) 203- | Wireless | Denver | American Messaging (am) |
| (303) 204- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 205- | Landline | Denver | Qwest Corporation |
| (303) 206- | Wireless | Denver | Usa Mobility Wireless |
| (303) 207- | Wireless | Denver | Usa Mobility Wireless |
| (303) 208- | Wireless | Denver | Usa Mobility Wireless |
| (303) 209- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 210- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 212- | Wireless | Denver | Contact Paging Of Colorado |
| (303) 213- | Wireless | Denver | Usa Mobility Wireless |
| (303) 214- | Landline | Aurora | Mcimetro Access Transmission Services LLC |
| (303) 215- | Landline | Golden | Qwest Corporation |
| (303) 216- | Landline | Golden | Qwest Corporation |
| (303) 217- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 218- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 219- | Landline | Brighton | Mcimetro Access Transmission Services LLC |
| (303) 220- | Landline | Denver | Qwest Corporation |
| (303) 221- | Landline | Denver | Qwest Corporation |
| (303) 222- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 223- | Landline | Denver | Global Crossing Local Services-co |
| (303) 224- | Landline | Denver | Qwest Corporation |
| (303) 225- | Landline | Denver | Global Crossing Local Services-co |
| (303) 226- | Landline | Denver | Icg Telecom Group |
| (303) 227- | Landline | Denver | Qwest Corporation |
| (303) 228- | Landline | Denver | Icg Telecom Group |
| (303) 229- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 230- | Wireless | Denver | Usa Mobility Wireless |
| (303) 231- | Landline | Denver | Qwest Corporation |
| (303) 232- | Landline | Denver | Qwest Corporation |
| (303) 233- | Landline | Denver | Qwest Corporation |
| (303) 234- | Landline | Denver | Qwest Corporation |
| (303) 235- | Landline | Denver | Qwest Corporation |
| (303) 236- | Landline | Denver | Qwest Corporation |
| (303) 237- | Landline | Denver | Qwest Corporation |
| (303) 238- | Landline | Denver | Qwest Corporation |
| (303) 239- | Landline | Denver | Qwest Corporation |
| (303) 240- | Wireless | Denver | Usa Mobility Wireless |
| (303) 241- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 242- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 243- | Wireless | Denver | N.e. Colorado Cellular |
| (303) 244- | Landline | Denver | Qwest Corporation |
| (303) 245- | Landline | Denver | Qwest Corporation |
| (303) 246- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 247- | Landline | Denver | Qwest Corporation |
| (303) 248- | Landline | Denver | Teleport Communications America |
| (303) 249- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 250- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 251- | Wireless | Denver | Usa Mobility Wireless |
| (303) 252- | Landline | Denver | Qwest Corporation |
| (303) 253- | Landline | Denver | Teleport Communications America |
| (303) 254- | Landline | Denver | Qwest Corporation |
| (303) 255- | Landline | Denver | Qwest Corporation |
| (303) 256- | Landline | Denver | Teleport Communications America |
| (303) 257- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 258- | Landline | Denver | Qwest Corporation |
| (303) 259- | Wireless | Denver | American Messaging (am) |
| (303) 260- | Landline | Denver | Qwest Corporation |
| (303) 261- | Landline | Aurora | Qwest Corporation |
| (303) 262- | Landline | Denver | AT&T Local |
| (303) 263- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 264- | Landline | Denver | Teleport Communications America |
| (303) 265- | Landline | Denver | Qwest Corporation |
| (303) 266- | Wireless | Denver | Usa Mobility Wireless |
| (303) 267- | Landline | Denver | Qwest Corporation |
| (303) 268- | Landline | Denver | Icg Telecom Group |
| (303) 269- | Landline | Denver | Qwest Corporation |
| (303) 270- | Landline | Denver | Qwest Corporation |
| (303) 271- | Landline | Golden | Qwest Corporation |
| (303) 272- | Landline | Denver | Qwest Corporation |
| (303) 273- | Landline | Golden | Qwest Corporation |
| (303) 274- | Landline | Denver | Qwest Corporation |
| (303) 275- | Landline | Denver | Qwest Corporation |
| (303) 276- | Landline | Denver | Convergent Communications |
| (303) 277- | Landline | Golden | Qwest Corporation |
| (303) 278- | Landline | Golden | Qwest Corporation |
| (303) 279- | Landline | Golden | Qwest Corporation |
| (303) 280- | Landline | Denver | Qwest Corporation |
| (303) 281- | Landline | Denver | Qwest Corporation |
| (303) 282- | Landline | Denver | Qwest Corporation |
| (303) 283- | Landline | Aurora | Qwest Corporation |
| (303) 284- | Landline | Denver | Comcast Phone Of Colorado |
| (303) 285- | Landline | Denver | Icg Telecom Group |
| (303) 286- | Landline | Denver | Qwest Corporation |
| (303) 287- | Landline | Denver | Qwest Corporation |
| (303) 288- | Landline | Denver | Qwest Corporation |
| (303) 289- | Landline | Denver | Qwest Corporation |
| (303) 290- | Landline | Denver | Qwest Corporation |
| (303) 291- | Landline | Denver | Qwest Corporation |
| (303) 292- | Landline | Denver | Qwest Corporation |
| (303) 293- | Landline | Denver | Qwest Corporation |
| (303) 294- | Landline | Denver | Qwest Corporation |
| (303) 295- | Landline | Denver | Qwest Corporation |
| (303) 296- | Landline | Denver | Qwest Corporation |
| (303) 297- | Landline | Denver | Qwest Corporation |
| (303) 298- | Landline | Denver | Qwest Corporation |
| (303) 299- | Landline | Denver | Qwest Corporation |
| (303) 300- | Landline | Denver | Qwest Corporation |
| (303) 301- | Landline | Denver | Icg Telecom Group |
| (303) 302- | Landline | Denver | Xo Colorado |
| (303) 304- | Wireless | Fort Lupton | New Cingular Wireless PCS |
| (303) 305- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 306- | Landline | Aurora | Qwest Corporation |
| (303) 307- | Landline | Denver | Qwest Corporation |
| (303) 308- | Landline | Denver | Qwest Corporation |
| (303) 309- | Landline | Denver | Global Crossing Local Services-co |
| (303) 310- | Wireless | Denver | Contact Paging Of Colorado |
| (303) 312- | Landline | Denver | Qwest Corporation |
| (303) 313- | Landline | Denver | Qwest Corporation |
| (303) 314- | Landline | Denver | Qwest Corporation |
| (303) 315- | Landline | Denver | Qwest Corporation |
| (303) 316- | Landline | Denver | Qwest Corporation |
| (303) 317- | Landline | Aurora | Qwest Corporation |
| (303) 318- | Landline | Denver | Qwest Corporation |
| (303) 319- | Wireless | Denver | Elbert County Wireless |
| (303) 320- | Landline | Denver | Qwest Corporation |
| (303) 321- | Landline | Denver | Qwest Corporation |
| (303) 322- | Landline | Denver | Qwest Corporation |
| (303) 323- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 324- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 325- | Landline | Denver | Icg Telecom Group |
| (303) 326- | Landline | Aurora | Qwest Corporation |
| (303) 327- | Landline | Denver | Icg Telecom Group |
| (303) 328- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 329- | Landline | Denver | Qwest Corporation |
| (303) 330- | Landline | Denver | 360networks (usa) Inc. |
| (303) 331- | Landline | Denver | Qwest Corporation |
| (303) 332- | Wireless | Denver | T-mobile Usa |
| (303) 333- | Landline | Denver | Qwest Corporation |
| (303) 334- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 335- | Landline | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 336- | Landline | Denver | Qwest Corporation |
| (303) 337- | Landline | Aurora | Qwest Corporation |
| (303) 338- | Landline | Aurora | Qwest Corporation |
| (303) 339- | Landline | Denver | Cbeyond Communications |
| (303) 340- | Landline | Aurora | Qwest Corporation |
| (303) 341- | Landline | Aurora | Qwest Corporation |
| (303) 342- | Landline | Aurora | Qwest Corporation |
| (303) 343- | Landline | Aurora | Qwest Corporation |
| (303) 344- | Landline | Aurora | Qwest Corporation |
| (303) 345- | Landline | Denver | Icg Telecom Group |
| (303) 346- | Landline | Littleton | Qwest Corporation |
| (303) 347- | Landline | Denver | Qwest Corporation |
| (303) 348- | Landline | Aurora | Qwest Corporation |
| (303) 349- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 350- | Landline | Denver | New Cingular Wireless PCS |
| (303) 351- | Landline | Keenesburg | 360networks (usa) Inc. |
| (303) 352- | Landline | Denver | Qwest Corporation |
| (303) 353- | Landline | Denver | Comcast Phone Of Colorado |
| (303) 354- | Landline | Denver | Teleport Communications America |
| (303) 355- | Landline | Denver | Qwest Corporation |
| (303) 356- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 357- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 358- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 359- | Wireless | Denver | T-mobile Usa |
| (303) 360- | Landline | Aurora | Qwest Corporation |
| (303) 361- | Landline | Aurora | Qwest Corporation |
| (303) 362- | Landline | Denver | Teleport Communications America |
| (303) 363- | Landline | Aurora | Qwest Corporation |
| (303) 364- | Landline | Aurora | Qwest Corporation |
| (303) 365- | Landline | Aurora | Qwest Corporation |
| (303) 366- | Landline | Aurora | Qwest Corporation |
| (303) 367- | Landline | Aurora | Qwest Corporation |
| (303) 368- | Landline | Aurora | Qwest Corporation |
| (303) 369- | Landline | Aurora | Qwest Corporation |
| (303) 370- | Landline | Denver | Qwest Corporation |
| (303) 371- | Landline | Denver | Qwest Corporation |
| (303) 372- | Landline | Denver | Qwest Corporation |
| (303) 373- | Landline | Denver | Qwest Corporation |
| (303) 374- | Landline | Denver | Teleport Communications America |
| (303) 375- | Landline | Denver | Qwest Corporation |
| (303) 376- | Landline | Denver | Icg Telecom Group |
| (303) 377- | Landline | Denver | Qwest Corporation |
| (303) 378- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 379- | Landline | Denver | Teleport Communications America |
| (303) 380- | Landline | Denver | Qwest Corporation |
| (303) 381- | Landline | Denver | Icg Telecom Group |
| (303) 382- | Landline | Denver | Qwest Corporation |
| (303) 383- | Landline | Denver | Qwest Corporation |
| (303) 384- | Landline | Golden | Qwest Corporation |
| (303) 385- | Landline | Denver | Icg Telecom Group |
| (303) 386- | Landline | Denver | Icg Telecom Group |
| (303) 387- | Landline | Denver | Mcleodusa Telecommunications Services- Co |
| (303) 388- | Landline | Denver | Qwest Corporation |
| (303) 389- | Landline | Denver | Qwest Corporation |
| (303) 390- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 391- | Landline | Denver | Qwest Corporation |
| (303) 392- | Wireless | Denver | Contact Paging Of Colorado |
| (303) 393- | Landline | Denver | Qwest Corporation |
| (303) 394- | Landline | Denver | Qwest Corporation |
| (303) 395- | Landline | Denver | Global Crossing Local Services-co |
| (303) 396- | Landline | Denver | Live Wire Networks |
| (303) 397- | Landline | Denver | Qwest Corporation |
| (303) 398- | Landline | Denver | Qwest Corporation |
| (303) 399- | Landline | Denver | Qwest Corporation |
| (303) 400- | Landline | Denver | Qwest Corporation |
| (303) 401- | Landline | Denver | Qwest Corporation |
| (303) 402- | Landline | Denver | Qwest Corporation |
| (303) 403- | Landline | Denver | Qwest Corporation |
| (303) 404- | Landline | Denver | Qwest Corporation |
| (303) 405- | Landline | Denver | Qwest Corporation |
| (303) 406- | Landline | Denver | Icg Telecom Group |
| (303) 407- | Landline | Denver | Cbeyond Communications |
| (303) 408- | Landline | Denver | New Cingular Wireless PCS |
| (303) 409- | Landline | Denver | Icg Telecom Group |
| (303) 410- | Landline | Denver | Qwest Corporation |
| (303) 412- | Landline | Denver | Qwest Corporation |
| (303) 413- | Landline | Denver | Qwest Corporation |
| (303) 414- | Landline | Denver | Icg Telecom Group |
| (303) 415- | Landline | Denver | Qwest Corporation |
| (303) 416- | Landline | Denver | Global Crossing Local Services-co |
| (303) 417- | Landline | Denver | Qwest Corporation |
| (303) 418- | Landline | Aurora | Icg Telecom Group |
| (303) 419- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 420- | Landline | Denver | Qwest Corporation |
| (303) 421- | Landline | Denver | Qwest Corporation |
| (303) 422- | Landline | Denver | Qwest Corporation |
| (303) 423- | Landline | Denver | Qwest Corporation |
| (303) 424- | Landline | Denver | Qwest Corporation |
| (303) 425- | Landline | Denver | Qwest Corporation |
| (303) 426- | Landline | Denver | Qwest Corporation |
| (303) 427- | Landline | Denver | Qwest Corporation |
| (303) 428- | Landline | Denver | Qwest Corporation |
| (303) 429- | Landline | Denver | Qwest Corporation |
| (303) 430- | Landline | Denver | Qwest Corporation |
| (303) 431- | Landline | Denver | Qwest Corporation |
| (303) 432- | Landline | Denver | Qwest Corporation |
| (303) 433- | Landline | Denver | Qwest Corporation |
| (303) 434- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 435- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 436- | Landline | Denver | Qwest Corporation |
| (303) 437- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 438- | Landline | Denver | Qwest Corporation |
| (303) 439- | Landline | Denver | Qwest Corporation |
| (303) 440- | Landline | Denver | Qwest Corporation |
| (303) 441- | Landline | Denver | Qwest Corporation |
| (303) 442- | Landline | Denver | Qwest Corporation |
| (303) 443- | Landline | Denver | Qwest Corporation |
| (303) 444- | Landline | Denver | Qwest Corporation |
| (303) 445- | Landline | Denver | Qwest Corporation |
| (303) 446- | Landline | Denver | Qwest Corporation |
| (303) 447- | Landline | Denver | Qwest Corporation |
| (303) 448- | Landline | Denver | Qwest Corporation |
| (303) 449- | Landline | Denver | Qwest Corporation |
| (303) 450- | Landline | Denver | Qwest Corporation |
| (303) 451- | Landline | Denver | Qwest Corporation |
| (303) 452- | Landline | Denver | Qwest Corporation |
| (303) 453- | Landline | Denver | Qwest Corporation |
| (303) 454- | Landline | Denver | Qwest Corporation |
| (303) 455- | Landline | Denver | Qwest Corporation |
| (303) 456- | Landline | Denver | Qwest Corporation |
| (303) 457- | Landline | Denver | Qwest Corporation |
| (303) 458- | Landline | Denver | Qwest Corporation |
| (303) 459- | Landline | Denver | Qwest Corporation |
| (303) 460- | Landline | Denver | Qwest Corporation |
| (303) 461- | Wireless | Denver | Usa Mobility Wireless |
| (303) 462- | Landline | Denver | Qwest Corporation |
| (303) 463- | Landline | Denver | Qwest Corporation |
| (303) 464- | Landline | Denver | Qwest Corporation |
| (303) 465- | Landline | Denver | Qwest Corporation |
| (303) 466- | Landline | Denver | Qwest Corporation |
| (303) 467- | Landline | Denver | Qwest Corporation |
| (303) 468- | Landline | Denver | Cbeyond Communications |
| (303) 469- | Landline | Denver | Qwest Corporation |
| (303) 470- | Landline | Littleton | Qwest Corporation |
| (303) 471- | Landline | Littleton | Qwest Corporation |
| (303) 472- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 473- | Landline | Denver | Qwest Corporation |
| (303) 474- | Landline | Denver | Teleport Communications America |
| (303) 475- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 476- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 477- | Landline | Denver | Qwest Corporation |
| (303) 478- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 479- | Landline | Brighton | Teleport Communications America |
| (303) 480- | Landline | Denver | Qwest Corporation |
| (303) 481- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 482- | Landline | Denver | Global Crossing Local Services-co |
| (303) 483- | Landline | Denver | Icg Telecom Group |
| (303) 484- | Landline | Denver | Teleport Communications America |
| (303) 485- | Landline | Longmont | Qwest Corporation |
| (303) 486- | Landline | Denver | Qwest Corporation |
| (303) 487- | Landline | Denver | Qwest Corporation |
| (303) 488- | Landline | Denver | Qwest Corporation |
| (303) 489- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 490- | Wireless | Denver | Usa Mobility Wireless |
| (303) 491- | Wireless | Denver | Usa Mobility Wireless |
| (303) 492- | Landline | Denver | Qwest Corporation |
| (303) 493- | Landline | Denver | Icg Telecom Group |
| (303) 494- | Landline | Denver | Qwest Corporation |
| (303) 495- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 496- | Landline | Denver | Xo Colorado |
| (303) 497- | Landline | Denver | Qwest Corporation |
| (303) 498- | Landline | Brighton | Comcast Phone Of Colorado |
| (303) 499- | Landline | Denver | Qwest Corporation |
| (303) 500- | Landline | Hudson | Level 3 Communications |
| (303) 501- | Landline | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 502- | Wireless | Fort Lupton | Cellco Partnership DBA Verizon Wireless |
| (303) 503- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 504- | Landline | Denver | Qwest Corporation |
| (303) 505- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 506- | Wireless | Fort Lupton | New Cingular Wireless PCS |
| (303) 507- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 508- | Wireless | Denver | American Messaging (am) |
| (303) 509- | Wireless | Denver | American Messaging (am) |
| (303) 510- | Wireless | Denver | American Messaging (am) |
| (303) 512- | Landline | Denver | Qwest Corporation |
| (303) 513- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 514- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 515- | Landline | Denver | 360networks (usa) Inc. |
| (303) 516- | Landline | Denver | Qwest Corporation |
| (303) 517- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 518- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 519- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 520- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 521- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 522- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 523- | Wireless | Denver | T-mobile Usa |
| (303) 524- | Landline | Denver | Teleport Communications America |
| (303) 525- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 526- | Landline | Golden | Qwest Corporation |
| (303) 527- | Landline | Denver | Qwest Corporation |
| (303) 528- | Wireless | Denver | American Messaging (am) |
| (303) 529- | Wireless | Denver | Usa Mobility Wireless |
| (303) 530- | Landline | Denver | Qwest Corporation |
| (303) 531- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 532- | Landline | Longmont | Mcleodusa Telecommunications Services- Co |
| (303) 533- | Landline | Denver | Qwest Corporation |
| (303) 534- | Landline | Denver | Qwest Corporation |
| (303) 535- | Landline | Fort Lupton | Cbeyond Communications |
| (303) 536- | Landline | Hudson | Qwest Corporation |
| (303) 537- | Landline | Aurora | Teleport Communications America |
| (303) 538- | Landline | Denver | Qwest Corporation |
| (303) 539- | Landline | Denver | Xo Colorado |
| (303) 540- | Wireless | Denver | Usa Mobility Wireless |
| (303) 541- | Landline | Denver | Qwest Corporation |
| (303) 542- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 543- | Landline | Denver | Qwest Corporation |
| (303) 544- | Landline | Denver | Qwest Corporation |
| (303) 545- | Landline | Denver | Qwest Corporation |
| (303) 546- | Landline | Denver | Qwest Corporation |
| (303) 547- | Landline | Denver | Global Crossing Local Services-co |
| (303) 548- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 549- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 550- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 551- | Landline | Louisville | Mcimetro Access Transmission Services LLC |
| (303) 552- | Landline | Denver | Global Crossing Local Services-co |
| (303) 553- | Wireless | Denver | Usa Mobility Wireless |
| (303) 554- | Landline | Denver | Qwest Corporation |
| (303) 556- | Landline | Denver | Qwest Corporation |
| (303) 557- | Landline | Aurora | Global Crossing Local Services-co |
| (303) 558- | Landline | Brighton | Global Crossing Local Services-co |
| (303) 559- | Wireless | Denver | American Messaging (am) |
| (303) 560- | Wireless | Denver | Usa Mobility Wireless |
| (303) 561- | Landline | Denver | Qwest Corporation |
| (303) 562- | Landline | Denver | Global Crossing Local Services-co |
| (303) 563- | Landline | Denver | Icg Telecom Group |
| (303) 564- | Wireless | Denver | T-mobile Usa |
| (303) 565- | Landline | Denver | Cbeyond Communications |
| (303) 566- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 567- | Landline | Denver | Qwest Corporation |
| (303) 568- | Landline | Denver | Teleport Communications America |
| (303) 569- | Landline | Idaho Springs | Qwest Corporation |
| (303) 570- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 571- | Landline | Denver | Qwest Corporation |
| (303) 572- | Landline | Denver | Qwest Corporation |
| (303) 573- | Landline | Denver | Qwest Corporation |
| (303) 574- | Landline | Denver | Qwest Corporation |
| (303) 575- | Landline | Denver | Qwest Corporation |
| (303) 576- | Landline | Denver | Qwest Corporation |
| (303) 577- | Landline | Aurora | Eschelon Telecom Of Colorado |
| (303) 578- | Landline | Keenesburg | Level 3 Communications |
| (303) 579- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 580- | Wireless | Denver | American Messaging (am) |
| (303) 581- | Landline | Denver | Qwest Corporation |
| (303) 582- | Landline | Denver | Qwest Corporation |
| (303) 583- | Landline | Denver | Teleport Communications America |
| (303) 584- | Landline | Denver | Qwest Corporation |
| (303) 585- | Landline | Denver | Qwest Corporation |
| (303) 586- | Landline | Denver | 4dvision |
| (303) 587- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 588- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 589- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 590- | Landline | Denver | Icg Telecom Group |
| (303) 591- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 592- | Landline | Denver | Qwest Corporation |
| (303) 593- | Landline | Denver | Teleport Communications America |
| (303) 594- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 595- | Landline | Denver | Qwest Corporation |
| (303) 596- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 597- | Landline | Denver | Eschelon Telecom Of Colorado |
| (303) 598- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 599- | Wireless | Denver | Usa Mobility Wireless |
| (303) 600- | Landline | Denver | Teleport Communications America |
| (303) 601- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 602- | Landline | Denver | Qwest Corporation |
| (303) 603- | Landline | Denver | Qwest Corporation |
| (303) 604- | Landline | Denver | Qwest Corporation |
| (303) 605- | Landline | Denver | Qwest Corporation |
| (303) 606- | Landline | Denver | Qwest Corporation |
| (303) 607- | Landline | Denver | Qwest Corporation |
| (303) 608- | Landline | Denver | Qwest Corporation |
| (303) 609- | Wireless | Denver | Usa Mobility Wireless |
| (303) 610- | Wireless | Denver | Usa Mobility Wireless |
| (303) 612- | Wireless | Denver | Usa Mobility Wireless |
| (303) 613- | Wireless | Denver | Usa Mobility Wireless |
| (303) 614- | Landline | Aurora | Qwest Corporation |
| (303) 615- | Landline | Denver | Qwest Corporation |
| (303) 616- | Wireless | Denver | Usa Mobility Wireless |
| (303) 617- | Landline | Denver | Qwest Corporation |
| (303) 618- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 619- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 620- | Landline | Denver | Qwest Corporation |
| (303) 621- | Landline | Denver | Qwest Corporation |
| (303) 622- | Landline | Strasburg | Strasburg Telephone Co. |
| (303) 623- | Landline | Denver | Qwest Corporation |
| (303) 624- | Landline | Denver | Qwest Corporation |
| (303) 625- | Landline | Denver | Icg Telecom Group |
| (303) 626- | Landline | Denver | Qwest Corporation |
| (303) 627- | Landline | Denver | Qwest Corporation |
| (303) 628- | Landline | Denver | Qwest Corporation |
| (303) 629- | Landline | Denver | Qwest Corporation |
| (303) 630- | Landline | Denver | Qwest Corporation |
| (303) 632- | Landline | Denver | Teleport Communications America |
| (303) 633- | Landline | Denver | Qwest Corporation |
| (303) 634- | Landline | Denver | Qwest Corporation |
| (303) 635- | Landline | Denver | Qwest Corporation |
| (303) 636- | Landline | Aurora | Qwest Corporation |
| (303) 637- | Landline | Brighton | Qwest Corporation |
| (303) 638- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 639- | Landline | Denver | Qwest Corporation |
| (303) 640- | Landline | Denver | Qwest Corporation |
| (303) 641- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 642- | Landline | Denver | Qwest Corporation |
| (303) 643- | Landline | Denver | Qwest Corporation |
| (303) 644- | Landline | Bennett | Eastern Slope Rural Telephone Association |
| (303) 645- | Landline | Denver | Qwest Corporation |
| (303) 646- | Landline | Denver | Qwest Corporation |
| (303) 647- | Landline | Sedalia | Qwest Corporation |
| (303) 648- | Landline | Denver | Qwest Corporation |
| (303) 649- | Landline | Denver | Qwest Corporation |
| (303) 650- | Landline | Denver | Qwest Corporation |
| (303) 651- | Landline | Longmont | Qwest Corporation |
| (303) 652- | Landline | Longmont | Qwest Corporation |
| (303) 653- | Landline | Denver | Icg Telecom Group |
| (303) 654- | Landline | Brighton | Qwest Corporation |
| (303) 655- | Landline | Brighton | Qwest Corporation |
| (303) 656- | Wireless | Denver | Big River Telephone Company - MO |
| (303) 657- | Landline | Denver | Qwest Corporation |
| (303) 658- | Wireless | Denver | Qwest Corporation |
| (303) 659- | Landline | Brighton | Qwest Corporation |
| (303) 660- | Landline | Denver | Qwest Corporation |
| (303) 661- | Landline | Denver | Qwest Corporation |
| (303) 662- | Landline | Denver | Qwest Corporation |
| (303) 663- | Landline | Denver | Qwest Corporation |
| (303) 664- | Landline | Denver | Qwest Corporation |
| (303) 665- | Landline | Denver | Qwest Corporation |
| (303) 666- | Landline | Denver | Qwest Corporation |
| (303) 667- | Wireless | Denver | T-mobile Usa |
| (303) 668- | Wireless | Denver | T-mobile Usa |
| (303) 669- | Wireless | Denver | T-mobile Usa |
| (303) 670- | Landline | Denver | Qwest Corporation |
| (303) 671- | Landline | Aurora | Qwest Corporation |
| (303) 672- | Landline | Denver | Qwest Corporation |
| (303) 673- | Landline | Denver | Qwest Corporation |
| (303) 674- | Landline | Denver | Qwest Corporation |
| (303) 675- | Landline | Denver | Qwest Corporation |
| (303) 676- | Landline | Aurora | Qwest Corporation |
| (303) 677- | Landline | Aurora | Qwest Corporation |
| (303) 678- | Landline | Longmont | Qwest Corporation |
| (303) 679- | Landline | Denver | Qwest Corporation |
| (303) 680- | Landline | Denver | Qwest Corporation |
| (303) 681- | Landline | Denver | Qwest Corporation |
| (303) 682- | Landline | Longmont | Qwest Corporation |
| (303) 683- | Landline | Littleton | Qwest Corporation |
| (303) 684- | Landline | Longmont | Qwest Corporation |
| (303) 685- | Landline | Denver | Qwest Corporation |
| (303) 686- | Wireless | Denver | Usa Mobility Wireless |
| (303) 687- | Wireless | Denver | Usa Mobility Wireless |
| (303) 688- | Landline | Denver | Qwest Corporation |
| (303) 689- | Landline | Denver | Qwest Corporation |
| (303) 690- | Landline | Denver | Qwest Corporation |
| (303) 691- | Landline | Denver | Qwest Corporation |
| (303) 692- | Landline | Denver | Qwest Corporation |
| (303) 693- | Landline | Denver | Qwest Corporation |
| (303) 694- | Landline | Denver | Qwest Corporation |
| (303) 695- | Landline | Aurora | Qwest Corporation |
| (303) 696- | Landline | Aurora | Qwest Corporation |
| (303) 697- | Landline | Denver | Qwest Corporation |
| (303) 698- | Landline | Denver | Qwest Corporation |
| (303) 699- | Landline | Denver | Qwest Corporation |
| (303) 701- | Wireless | Denver | Communications Unlimited |
| (303) 702- | Landline | Longmont | Qwest Corporation |
| (303) 703- | Landline | Denver | Qwest Corporation |
| (303) 704- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 705- | Landline | Denver | Qwest Corporation |
| (303) 706- | Landline | Denver | Qwest Corporation |
| (303) 707- | Landline | Denver | Qwest Corporation |
| (303) 708- | Landline | Denver | Qwest Corporation |
| (303) 709- | Wireless | Longmont | Cellco Partnership DBA Verizon Wireless |
| (303) 710- | Wireless | Fort Lupton | Cellco Partnership DBA Verizon Wireless |
| (303) 712- | Landline | Denver | Qwest Corporation |
| (303) 713- | Landline | Denver | Qwest Corporation |
| (303) 714- | Landline | Denver | Qwest Corporation |
| (303) 715- | Landline | Denver | Qwest Corporation |
| (303) 716- | Landline | Denver | Qwest Corporation |
| (303) 717- | Wireless | Fort Lupton | New Cingular Wireless PCS |
| (303) 718- | Wireless | Fort Lupton | Cellco Partnership DBA Verizon Wireless |
| (303) 719- | Landline | Deer Trail | Ymax Communications Corp. |
| (303) 720- | Wireless | Fort Lupton | Cellco Partnership DBA Verizon Wireless |
| (303) 721- | Landline | Denver | Qwest Corporation |
| (303) 722- | Landline | Denver | Qwest Corporation |
| (303) 723- | Landline | Denver | Teleport Communications America |
| (303) 724- | Landline | Aurora | Qwest Corporation |
| (303) 725- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 726- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 727- | Landline | Denver | Qwest Corporation |
| (303) 728- | Landline | Denver | Teleport Communications America |
| (303) 729- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 730- | Landline | Denver | Qwest Corporation |
| (303) 731- | Landline | Aurora | Level 3 Communications |
| (303) 732- | Landline | Keenesburg | Qwest Corporation |
| (303) 733- | Landline | Denver | Qwest Corporation |
| (303) 734- | Landline | Denver | Qwest Corporation |
| (303) 735- | Landline | Denver | Qwest Corporation |
| (303) 736- | Landline | Denver | Teleport Communications America |
| (303) 737- | Landline | Denver | Qwest Corporation |
| (303) 738- | Landline | Denver | Qwest Corporation |
| (303) 739- | Landline | Aurora | Qwest Corporation |
| (303) 740- | Landline | Denver | Qwest Corporation |
| (303) 741- | Landline | Denver | Qwest Corporation |
| (303) 742- | Landline | Denver | Qwest Corporation |
| (303) 743- | Landline | Aurora | Qwest Corporation |
| (303) 744- | Landline | Denver | Qwest Corporation |
| (303) 745- | Landline | Aurora | Qwest Corporation |
| (303) 746- | Wireless | Longmont | Cellco Partnership DBA Verizon Wireless |
| (303) 747- | Landline | Allenspark | Qwest Corporation |
| (303) 748- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 749- | Landline | Denver | Teleport Communications America |
| (303) 750- | Landline | Aurora | Qwest Corporation |
| (303) 751- | Landline | Aurora | Qwest Corporation |
| (303) 752- | Landline | Aurora | Qwest Corporation |
| (303) 753- | Landline | Denver | Qwest Corporation |
| (303) 754- | Landline | Denver | Qwest Corporation |
| (303) 755- | Landline | Aurora | Qwest Corporation |
| (303) 756- | Landline | Denver | Qwest Corporation |
| (303) 757- | Landline | Denver | Qwest Corporation |
| (303) 758- | Landline | Denver | Qwest Corporation |
| (303) 759- | Landline | Denver | Qwest Corporation |
| (303) 760- | Wireless | Denver | Usa Mobility Wireless |
| (303) 761- | Landline | Denver | Qwest Corporation |
| (303) 762- | Landline | Denver | Qwest Corporation |
| (303) 763- | Landline | Denver | Qwest Corporation |
| (303) 764- | Landline | Denver | Qwest Corporation |
| (303) 765- | Landline | Denver | Qwest Corporation |
| (303) 766- | Landline | Denver | Qwest Corporation |
| (303) 767- | Wireless | Denver | Contact Paging Of Colorado |
| (303) 768- | Landline | Denver | Qwest Corporation |
| (303) 769- | Landline | Deer Trail | Bijou Telephone Cooperative Association |
| (303) 770- | Landline | Denver | Qwest Corporation |
| (303) 771- | Landline | Denver | Qwest Corporation |
| (303) 772- | Landline | Longmont | Qwest Corporation |
| (303) 773- | Landline | Denver | Qwest Corporation |
| (303) 774- | Landline | Longmont | Qwest Corporation |
| (303) 775- | Wireless | Longmont | Cellco Partnership DBA Verizon Wireless |
| (303) 776- | Landline | Longmont | Qwest Corporation |
| (303) 777- | Landline | Denver | Qwest Corporation |
| (303) 778- | Landline | Denver | Qwest Corporation |
| (303) 779- | Landline | Denver | Qwest Corporation |
| (303) 780- | Landline | Denver | Qwest Corporation |
| (303) 781- | Landline | Denver | Qwest Corporation |
| (303) 782- | Landline | Denver | Qwest Corporation |
| (303) 783- | Landline | Denver | Qwest Corporation |
| (303) 784- | Landline | Denver | Qwest Corporation |
| (303) 785- | Landline | Englewood | Xo Colorado |
| (303) 786- | Landline | Denver | Qwest Corporation |
| (303) 787- | Landline | Denver | Qwest Corporation |
| (303) 788- | Landline | Denver | Qwest Corporation |
| (303) 789- | Landline | Denver | Qwest Corporation |
| (303) 790- | Landline | Denver | Qwest Corporation |
| (303) 791- | Landline | Littleton | Qwest Corporation |
| (303) 792- | Landline | Denver | Qwest Corporation |
| (303) 793- | Landline | Denver | Qwest Corporation |
| (303) 794- | Landline | Denver | Qwest Corporation |
| (303) 795- | Landline | Denver | Qwest Corporation |
| (303) 796- | Landline | Denver | Qwest Corporation |
| (303) 797- | Landline | Denver | Qwest Corporation |
| (303) 798- | Landline | Denver | Qwest Corporation |
| (303) 799- | Landline | Denver | Qwest Corporation |
| (303) 800- | Landline | Denver | Level 3 Communications |
| (303) 801- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 802- | Landline | Denver | Tw Telecom Of Colorado LLC |
| (303) 803- | Landline | Denver | Tw Telecom Of Colorado LLC |
| (303) 804- | Landline | Denver | Qwest Corporation |
| (303) 805- | Landline | Denver | Qwest Corporation |
| (303) 806- | Landline | Denver | Qwest Corporation |
| (303) 807- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 808- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 809- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 810- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 812- | Landline | Denver | Qwest Corporation |
| (303) 813- | Landline | Denver | Qwest Corporation |
| (303) 814- | Landline | Denver | Qwest Corporation |
| (303) 815- | Landline | Denver | Interlink Adv Svc D/b/a Forethought.net |
| (303) 816- | Landline | Denver | Qwest Corporation |
| (303) 817- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 818- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 819- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 820- | Landline | Denver | Qwest Corporation |
| (303) 821- | Wireless | Denver | Usa Mobility Wireless |
| (303) 822- | Landline | Byers | Bijou Telephone Cooperative Association |
| (303) 823- | Landline | Lyons | Qwest Corporation |
| (303) 824- | Landline | Denver | Teleport Communications America |
| (303) 825- | Landline | Denver | Qwest Corporation |
| (303) 826- | Wireless | Denver | Usa Mobility Wireless |
| (303) 827- | Landline | Longmont | Icg Telecom Group |
| (303) 828- | Landline | Denver | Qwest Corporation |
| (303) 829- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 830- | Landline | Denver | Qwest Corporation |
| (303) 831- | Landline | Denver | Qwest Corporation |
| (303) 832- | Landline | Denver | Qwest Corporation |
| (303) 833- | Landline | Denver | Qwest Corporation |
| (303) 834- | Wireless | Longmont | Cellco Partnership DBA Verizon Wireless |
| (303) 835- | Landline | Brighton | Level 3 Communications |
| (303) 836- | Wireless | Denver | Communications Unlimited |
| (303) 837- | Landline | Denver | Qwest Corporation |
| (303) 838- | Landline | Denver | Qwest Corporation |
| (303) 839- | Landline | Denver | Qwest Corporation |
| (303) 840- | Landline | Denver | Qwest Corporation |
| (303) 841- | Landline | Denver | Qwest Corporation |
| (303) 842- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 843- | Landline | Denver | Qwest Corporation |
| (303) 844- | Landline | Denver | Qwest Corporation |
| (303) 845- | Landline | Longmont | Teleport Communications America |
| (303) 846- | Landline | Denver | Qwest Corporation |
| (303) 847- | Landline | Denver | Level 3 Communications |
| (303) 848- | Landline | Longmont | Icg Telecom Group |
| (303) 849- | Landline | Roggen | Roggen Telephone Cooperative Co. |
| (303) 850- | Landline | Denver | Qwest Corporation |
| (303) 851- | Wireless | Denver | Usa Mobility Wireless |
| (303) 852- | Wireless | Denver | Usa Mobility Wireless |
| (303) 853- | Landline | Denver | Qwest Corporation |
| (303) 854- | Landline | Denver | Icg Telecom Group |
| (303) 855- | Wireless | Denver | Usa Mobility Wireless |
| (303) 856- | Landline | Englewood | Icg Telecom Group |
| (303) 857- | Landline | Fort Lupton | Qwest Corporation |
| (303) 858- | Landline | Denver | Qwest Corporation |
| (303) 859- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 860- | Landline | Denver | Qwest Corporation |
| (303) 861- | Landline | Denver | Qwest Corporation |
| (303) 862- | Landline | Denver | Comcast Phone Of Colorado |
| (303) 863- | Landline | Denver | Qwest Corporation |
| (303) 864- | Landline | Denver | Qwest Corporation |
| (303) 865- | Landline | Denver | Icg Telecom Group |
| (303) 866- | Landline | Denver | Qwest Corporation |
| (303) 867- | Landline | Denver | Iloka DBA Newcloud Networks |
| (303) 868- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 869- | Landline | Denver | Qwest Corporation |
| (303) 870- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 871- | Landline | Denver | Qwest Corporation |
| (303) 872- | Landline | Denver | Level 3 Communications |
| (303) 873- | Landline | Aurora | Qwest Corporation |
| (303) 874- | Landline | Englewood | Icg Telecom Group |
| (303) 875- | Wireless | Denver | T-mobile Usa |
| (303) 876- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 877- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 878- | Wireless | Denver | Usa Mobility Wireless |
| (303) 879- | Wireless | Denver | Usa Mobility Wireless |
| (303) 880- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 881- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 882- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 883- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 884- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 885- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 886- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 887- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 888- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 889- | Landline | Denver | Qwest Corporation |
| (303) 890- | Wireless | Denver | Usa Mobility Wireless |
| (303) 891- | Wireless | Denver | Usa Mobility Wireless |
| (303) 892- | Landline | Denver | Qwest Corporation |
| (303) 893- | Landline | Denver | Qwest Corporation |
| (303) 894- | Landline | Denver | Qwest Corporation |
| (303) 895- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 896- | Landline | Denver | Qwest Corporation |
| (303) 897- | Wireless | Denver | Usa Mobility Wireless |
| (303) 898- | Wireless | Denver | New Cingular Wireless PCS |
| (303) 899- | Landline | Denver | Qwest Corporation |
| (303) 900- | Landline | Idaho Springs | Level 3 Communications |
| (303) 901- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 902- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 903- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 904- | Landline | Denver | Qwest Corporation |
| (303) 905- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 906- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 907- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 908- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 909- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 910- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 912- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 913- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 914- | Landline | Denver | Qwest Corporation |
| (303) 915- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 916- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 917- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 918- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 919- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 920- | Landline | Denver | Qwest Corporation |
| (303) 921- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 922- | Landline | Denver | Qwest Corporation |
| (303) 923- | Landline | Denver | Icg Telecom Group |
| (303) 924- | Landline | Denver | Qwest Corporation |
| (303) 925- | Landline | Denver | Qwest Corporation |
| (303) 926- | Landline | Denver | Qwest Corporation |
| (303) 927- | Landline | Denver | Teleport Communications America |
| (303) 928- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 929- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 930- | Landline | Denver | Qwest Corporation |
| (303) 931- | Wireless | Denver | T-mobile Usa |
| (303) 932- | Landline | Denver | Qwest Corporation |
| (303) 933- | Landline | Denver | Qwest Corporation |
| (303) 934- | Landline | Denver | Qwest Corporation |
| (303) 935- | Landline | Denver | Qwest Corporation |
| (303) 936- | Landline | Denver | Qwest Corporation |
| (303) 937- | Landline | Denver | Qwest Corporation |
| (303) 938- | Landline | Denver | Qwest Corporation |
| (303) 939- | Landline | Denver | Qwest Corporation |
| (303) 940- | Landline | Denver | Qwest Corporation |
| (303) 941- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 942- | Landline | Denver | Teleport Communications America |
| (303) 943- | Unknown | Nextwave Telecom, Inc DBA Nextwave Wireless | |
| (303) 944- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 945- | Landline | Denver | Comcast Phone Of Colorado |
| (303) 946- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 947- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 948- | Landline | Denver | Qwest Corporation |
| (303) 949- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 951- | Landline | Denver | Level 3 Communications |
| (303) 952- | Landline | Denver | Level 3 Communications |
| (303) 953- | Landline | Denver | Level 3 Communications |
| (303) 954- | Landline | Denver | Level 3 Communications |
| (303) 955- | Landline | Denver | Global Crossing Local Services-co |
| (303) 956- | Wireless | Fort Lupton | New Cingular Wireless PCS |
| (303) 957- | Landline | Denver | Global Crossing Local Services-co |
| (303) 960- | Wireless | Denver | T-mobile Usa |
| (303) 961- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 962- | Landline | Denver | Cbeyond Communications |
| (303) 963- | Landline | Denver | Icg Telecom Group |
| (303) 964- | Landline | Denver | Qwest Corporation |
| (303) 965- | Landline | Denver | Qwest Corporation |
| (303) 966- | Landline | Denver | Qwest Corporation |
| (303) 967- | Landline | Denver | Qwest Corporation |
| (303) 968- | Landline | Denver | Mcimetro Access Transmission Services LLC |
| (303) 969- | Landline | Denver | Qwest Corporation |
| (303) 971- | Landline | Denver | Qwest Corporation |
| (303) 972- | Landline | Denver | Qwest Corporation |
| (303) 973- | Landline | Denver | Qwest Corporation |
| (303) 974- | Landline | Denver | Global Crossing Local Services-co |
| (303) 975- | Landline | Denver | Qwest Corporation |
| (303) 977- | Landline | Denver | Qwest Corporation |
| (303) 978- | Landline | Denver | Qwest Corporation |
| (303) 979- | Landline | Denver | Qwest Corporation |
| (303) 980- | Landline | Denver | Qwest Corporation |
| (303) 981- | Wireless | Denver | Cellco Partnership DBA Verizon Wireless |
| (303) 982- | Landline | Golden | Qwest Corporation |
| (303) 984- | Landline | Denver | Qwest Corporation |
| (303) 985- | Landline | Denver | Qwest Corporation |
| (303) 986- | Landline | Denver | Qwest Corporation |
| (303) 987- | Landline | Denver | Qwest Corporation |
| (303) 988- | Landline | Denver | Qwest Corporation |
| (303) 989- | Landline | Denver | Qwest Corporation |
| (303) 990- | Wireless | Fort Lupton | Sprint Spectrum L.p. |
| (303) 991- | Landline | Denver | Xo Colorado |
| (303) 992- | Landline | Denver | Qwest Corporation |
| (303) 993- | Landline | Denver | Neutral Tandem-colorado |
| (303) 994- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 995- | Wireless | Denver | Sprint Spectrum L.p. |
| (303) 996- | Landline | Denver | Eschelon Telecom Of Colorado |
| (303) 997- | Landline | Denver | Pac - West Telecomm |
| (303) 998- | Landline | Denver | Qwest Corporation |
| (303) 999- | Landline | Denver | Comcast Phone Of Colorado |
このWebサイトには、国コード、市外局番、番号計画の詳細、およびダイヤル方法に関するヒントが記載されています。 これは、世界中のどこにでも電話をかけるための完全なガイドです。 呼び出したい国名を見つけてクリックするだけです。 国コードを使用してその国に電話をかける方法、および市外局番、ISO国コードなどのその他の役立つ情報が表示されます。
