Area Code 303
CO - 228 exchanges found
About Area Code 303
This page displays all phone exchanges (NXX codes) associated with area code 303. Click on any 6-digit prefix to see detailed information about phone numbers in that range.
303
Phone Exchanges (NXX)
| Prefix | Exchange (NXX) | Rate Center | Carrier | Action |
|---|---|---|---|---|
| 303-200 | 200 | DENVER | Unknown | |
| 303-210 | 210 | DENVER | Unknown | |
| 303-214 | 214 | DENVER | Unknown | |
| 303-217 | 217 | DENVER | Unknown | |
| 303-218 | 218 | DENVER | Unknown | |
| 303-219 | 219 | DENVER | Unknown | |
| 303-225 | 225 | DENVER | Unknown | |
| 303-242 | 242 | DENVER | Unknown | |
| 303-243 | 243 | DENVER | Unknown | |
| 303-246 | 246 | DENVER | Unknown | |
| 303-248 | 248 | DENVER | Unknown | |
| 303-253 | 253 | DENVER | Unknown | |
| 303-257 | 257 | DENVER | Unknown | |
| 303-258 | 258 | DENVER | Unknown | |
| 303-260 | 260 | DENVER | Unknown | |
| 303-261 | 261 | DENVER | Unknown | |
| 303-264 | 264 | DENVER | Unknown | |
| 303-265 | 265 | DENVER | Unknown | |
| 303-269 | 269 | DENVER | Unknown | |
| 303-276 | 276 | DENVER | Unknown | |
| 303-284 | 284 | DENVER | Unknown | |
| 303-301 | 301 | DENVER | Unknown | |
| 303-303 | 303 | DENVER | Unknown | |
| 303-304 | 304 | FORTLUPTON | Unknown | |
| 303-305 | 305 | DENVER | Unknown | |
| 303-306 | 306 | DENVER | Unknown | |
| 303-309 | 309 | DENVER | Unknown | |
| 303-317 | 317 | DENVER | Unknown | |
| 303-319 | 319 | DENVER | Unknown | |
| 303-323 | 323 | DENVER | Unknown | |
| 303-325 | 325 | DENVER | Unknown | |
| 303-327 | 327 | DENVER | Unknown | |
| 303-328 | 328 | DENVER | Unknown | |
| 303-330 | 330 | DENVER | Unknown | |
| 303-335 | 335 | DENVER | Unknown | |
| 303-339 | 339 | DENVER | Unknown | |
| 303-345 | 345 | DENVER | Unknown | |
| 303-348 | 348 | DENVER | Unknown | |
| 303-350 | 350 | DENVER | Unknown | |
| 303-351 | 351 | DECKERS | Unknown | |
| 303-353 | 353 | DENVER | Unknown | |
| 303-356 | 356 | DENVER | Unknown | |
| 303-357 | 357 | DENVER | Unknown | |
| 303-362 | 362 | DENVER | Unknown | |
| 303-374 | 374 | DENVER | Unknown | |
| 303-379 | 379 | DENVER | Unknown | |
| 303-385 | 385 | DENVER | Unknown | |
| 303-386 | 386 | DENVER | Unknown | |
| 303-389 | 389 | DENVER | Unknown | |
| 303-392 | 392 | DENVER | Unknown | |
| 303-396 | 396 | DENVER | Unknown | |
| 303-401 | 401 | DENVER | Unknown | |
| 303-406 | 406 | DENVER | Unknown | |
| 303-408 | 408 | DENVER | Unknown | |
| 303-409 | 409 | DENVER | Unknown | |
| 303-414 | 414 | DENVER | Unknown | |
| 303-416 | 416 | DENVER | Unknown | |
| 303-418 | 418 | DENVER | Unknown | |
| 303-419 | 419 | DENVER | Unknown | |
| 303-434 | 434 | DENVER | Unknown | |
| 303-435 | 435 | DENVER | Unknown | |
| 303-437 | 437 | DENVER | Unknown | |
| 303-453 | 453 | DENVER | Unknown | |
| 303-457 | 457 | DENVER | Unknown | |
| 303-459 | 459 | DENVER | Unknown | |
| 303-468 | 468 | DENVER | Unknown | |
| 303-472 | 472 | DENVER | Unknown | |
| 303-474 | 474 | DENVER | Unknown | |
| 303-476 | 476 | DENVER | Unknown | |
| 303-479 | 479 | DENVER | Unknown | |
| 303-481 | 481 | DENVER | Unknown | |
| 303-482 | 482 | DENVER | Unknown | |
| 303-483 | 483 | DENVER | Unknown | |
| 303-484 | 484 | DENVER | Unknown | |
| 303-491 | 491 | DENVER | Unknown | |
| 303-493 | 493 | DENVER | Unknown | |
| 303-495 | 495 | DENVER | Unknown | |
| 303-496 | 496 | DENVER | Unknown | |
| 303-498 | 498 | DENVER | Unknown | |
| 303-500 | 500 | HUDSON | Unknown | |
| 303-501 | 501 | DENVER | Unknown | |
| 303-502 | 502 | FORTLUPTON | Unknown | |
| 303-505 | 505 | DENVER | Unknown | |
| 303-506 | 506 | FORTLUPTON | Unknown | |
| 303-507 | 507 | DENVER | Unknown | |
| 303-512 | 512 | DENVER | Unknown | |
| 303-515 | 515 | DENVER | Unknown | |
| 303-519 | 519 | DENVER | Unknown | |
| 303-520 | 520 | DENVER | Unknown | |
| 303-521 | 521 | DENVER | Unknown | |
| 303-522 | 522 | DENVER | Unknown | |
| 303-524 | 524 | DENVER | Unknown | |
| 303-525 | 525 | DENVER | Unknown | |
| 303-526 | 526 | DENVER | Unknown | |
| 303-529 | 529 | DENVER | Unknown | |
| 303-531 | 531 | DENVER | Unknown | |
| 303-532 | 532 | LONGMONT | Unknown | |
| 303-535 | 535 | FORTLUPTON | Unknown | |
| 303-536 | 536 | HUDSON | Unknown | |
| 303-537 | 537 | DENVER | Unknown | |
| 303-547 | 547 | DENVER | Unknown | |
| 303-551 | 551 | DENVER | Unknown | |
| 303-552 | 552 | DENVER | Unknown | |
| 303-557 | 557 | DENVER | Unknown | |
| 303-558 | 558 | DENVER | Unknown | |
| 303-562 | 562 | DENVER | Unknown | |
| 303-563 | 563 | DENVER | Unknown | |
| 303-565 | 565 | DENVER | Unknown | |
| 303-566 | 566 | DENVER | Unknown | |
| 303-567 | 567 | DENVER | Unknown | |
| 303-568 | 568 | DENVER | Unknown | |
| 303-569 | 569 | GEORGETOWN | Unknown | |
| 303-578 | 578 | KEENESBURG | Unknown | |
| 303-582 | 582 | DENVER | Unknown | |
| 303-585 | 585 | DENVER | Unknown | |
| 303-586 | 586 | DENVER | Unknown | |
| 303-587 | 587 | DENVER | Unknown | |
| 303-590 | 590 | DENVER | Unknown | |
| 303-591 | 591 | DENVER | Unknown | |
| 303-593 | 593 | DENVER | Unknown | |
| 303-596 | 596 | DENVER | Unknown | |
| 303-597 | 597 | DENVER | Unknown | |
| 303-598 | 598 | DENVER | Unknown | |
| 303-600 | 600 | DENVER | Unknown | |
| 303-607 | 607 | DENVER | Unknown | |
| 303-616 | 616 | KEENESBURG | Unknown | |
| 303-620 | 620 | DENVER | Unknown | |
| 303-621 | 621 | DENVER | Unknown | |
| 303-622 | 622 | STRASBURG | 2207-STRASBURG TEL. CO. | |
| 303-622 | 622 | STRASBURG | Unknown | |
| 303-625 | 625 | DENVER | Unknown | |
| 303-630 | 630 | DENVER | Unknown | |
| 303-632 | 632 | DENVER | Unknown | |
| 303-635 | 635 | DENVER | Unknown | |
| 303-636 | 636 | DENVER | Unknown | |
| 303-641 | 641 | DENVER | Unknown | |
| 303-642 | 642 | DENVER | Unknown | |
| 303-643 | 643 | DENVER | Unknown | |
| 303-645 | 645 | DENVER | Unknown | |
| 303-646 | 646 | DENVER | Unknown | |
| 303-647 | 647 | DECKERS | Unknown | |
| 303-648 | 648 | DENVER | Unknown | |
| 303-652 | 652 | LONGMONT | Unknown | |
| 303-653 | 653 | DENVER | Unknown | |
| 303-656 | 656 | DENVER | Unknown | |
| 303-658 | 658 | DENVER | Unknown | |
| 303-661 | 661 | DENVER | Unknown | |
| 303-676 | 676 | DENVER | Unknown | |
| 303-681 | 681 | DENVER | Unknown | |
| 303-704 | 704 | DENVER | Unknown | |
| 303-709 | 709 | LONGMONT | Unknown | |
| 303-710 | 710 | FORTLUPTON | Unknown | |
| 303-715 | 715 | DENVER | Unknown | |
| 303-718 | 718 | FORTLUPTON | Unknown | |
| 303-719 | 719 | DEER TRAIL | 6118-LEVEL 3 COMMUNICATIONS, LLC - CO | |
| 303-719 | 719 | DEER TRAIL | Unknown | |
| 303-720 | 720 | FORTLUPTON | Unknown | |
| 303-725 | 725 | DENVER | Unknown | |
| 303-727 | 727 | DENVER | Unknown | |
| 303-728 | 728 | DENVER | Unknown | |
| 303-731 | 731 | DENVER | Unknown | |
| 303-732 | 732 | KEENESBURG | Unknown | |
| 303-736 | 736 | DENVER | Unknown | |
| 303-746 | 746 | LONGMONT | Unknown | |
| 303-747 | 747 | ALLNSPKLYN | Unknown | |
| 303-749 | 749 | DENVER | Unknown | |
| 303-763 | 763 | DENVER | Unknown | |
| 303-801 | 801 | DENVER | Unknown | |
| 303-802 | 802 | DENVER | Unknown | |
| 303-803 | 803 | DENVER | Unknown | |
| 303-815 | 815 | DENVER | Unknown | |
| 303-816 | 816 | DECKERS | Unknown | |
| 303-823 | 823 | ALLNSPKLYN | 9636-QWEST CORPORATION | |
| 303-823 | 823 | ALLNSPKLYN | Unknown | |
| 303-824 | 824 | DENVER | Unknown | |
| 303-827 | 827 | LONGMONT | Unknown | |
| 303-828 | 828 | DENVER | Unknown | |
| 303-830 | 830 | DENVER | Unknown | |
| 303-834 | 834 | LONGMONT | Unknown | |
| 303-835 | 835 | DENVER | Unknown | |
| 303-842 | 842 | DENVER | Unknown | |
| 303-845 | 845 | LONGMONT | Unknown | |
| 303-847 | 847 | DENVER | Unknown | |
| 303-848 | 848 | LONGMONT | Unknown | |
| 303-854 | 854 | DENVER | Unknown | |
| 303-856 | 856 | DENVER | Unknown | |
| 303-857 | 857 | FORTLUPTON | Unknown | |
| 303-859 | 859 | DENVER | Unknown | |
| 303-862 | 862 | DENVER | Unknown | |
| 303-865 | 865 | DENVER | Unknown | |
| 303-867 | 867 | DENVER | Unknown | |
| 303-872 | 872 | DENVER | Unknown | |
| 303-874 | 874 | DENVER | Unknown | |
| 303-879 | 879 | DENVER | Unknown | |
| 303-889 | 889 | DENVER | Unknown | |
| 303-895 | 895 | DENVER | Unknown | |
| 303-900 | 900 | GEORGETOWN | Unknown | |
| 303-901 | 901 | DENVER | Unknown | |
| 303-917 | 917 | DENVER | Unknown | |
| 303-923 | 923 | DENVER | Unknown | |
| 303-927 | 927 | DENVER | Unknown | |
| 303-928 | 928 | DENVER | Unknown | |
| 303-942 | 942 | DENVER | Unknown | |
| 303-943 | 943 | DENVER | Unknown | |
| 303-944 | 944 | DENVER | Unknown | |
| 303-945 | 945 | DENVER | Unknown | |
| 303-946 | 946 | DENVER | Unknown | |
| 303-949 | 949 | DENVER | Unknown | |
| 303-951 | 951 | DENVER | Unknown | |
| 303-952 | 952 | DENVER | Unknown | |
| 303-953 | 953 | DENVER | Unknown | |
| 303-954 | 954 | DENVER | Unknown | |
| 303-955 | 955 | DENVER | Unknown | |
| 303-957 | 957 | DENVER | Unknown | |
| 303-961 | 961 | DENVER | Unknown | |
| 303-962 | 962 | DENVER | Unknown | |
| 303-963 | 963 | DENVER | Unknown | |
| 303-967 | 967 | DENVER | Unknown | |
| 303-968 | 968 | DENVER | Unknown | |
| 303-970 | 970 | DECKERS | Unknown | |
| 303-974 | 974 | DENVER | Unknown | |
| 303-975 | 975 | DENVER | Unknown | |
| 303-990 | 990 | FORTLUPTON | Unknown | |
| 303-993 | 993 | DENVER | Unknown | |
| 303-994 | 994 | DENVER | Unknown | |
| 303-995 | 995 | DENVER | Unknown | |
| 303-997 | 997 | DENVER | Unknown | |
| 303-999 | 999 | DENVER | Unknown |
Quick Facts
- Area Code 303
- State CO
- Exchanges 228