What is the area code for Federal Heights, CO?

Federal Heights uses 3 area codes: 303, 720 and 983. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.

What time zone is Federal Heights in?

Federal Heights is in the Mountain time zone.

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Federal Heights, CO Area Codes

Federal Heights, Colorado (population 14,075) uses area codes 303, 720 and 983.

Area code303

Area code720

Area code983

Time zoneMountain

Local time now…

Federal Heights has no telephone exchange of its own in NANPA records; it is served by the Denver exchange about 16.2 km away.

Federal Heights and nearby cities in area code 303

Carriers with Federal Heights numbers

1447 prefixes are assigned to the Denver exchange: 28% mobile, 26% VoIP and cable, 46% landline.

Carrier	Prefixes
Lumen (Qwest)	528
T-Mobile	163
AT&T Mobility	119
Verizon Wireless	118
Lumen (Level 3)	111
Verizon Business (MCImetro)	80
AT&T (Teleport)	59
Onvoy (Sinch)	57

Area codes used in Federal Heights

Area code	Prefixes serving Federal Heights	Main carriers in this code
303	736	Lumen (Qwest), Verizon Wireless, Lumen (Level 3)
720	679	T-Mobile, Lumen (Qwest), AT&T Mobility
983	32	Onvoy (Sinch), Wide Voice, AT&T Mobility

Federal Heights phone number prefixes

Numbers starting with these first six digits were originally assigned to the Denver exchange.

303-200 AT&T (Teleport)
303-201 Spok
303-202 Lumen (Qwest)
303-203 American Messaging Services
303-204 Verizon Wireless
303-205 Lumen (Qwest)
303-206 Spok
303-207 Spok
303-208 Spok
303-209 Verizon Business (MCImetro)
303-210 T-Mobile
303-212 American Messaging Services
303-213 Spok
303-214 Verizon Business (MCImetro)
303-215 Lumen (Qwest)
303-216 Lumen (Qwest)
303-217 Verizon Business (MCImetro)
303-218 Verizon Business (MCImetro)
303-219 Verizon Business (MCImetro)
303-220 Lumen (Qwest)
303-221 Lumen (Qwest)
303-222 Verizon Business (MCImetro)
303-223 Lumen (Level 3)
303-224 Lumen (Qwest)
303-225 Lumen (Level 3)
303-226 Lumen (Level 3)
303-227 Lumen (Qwest)
303-228 Lumen (Level 3)
303-229 Verizon Wireless
303-230 Spok
303-231 Lumen (Qwest)
303-232 Lumen (Qwest)
303-233 Lumen (Qwest)
303-234 Lumen (Qwest)
303-235 Lumen (Qwest)
303-236 Lumen (Qwest)
303-237 Lumen (Qwest)
303-238 Lumen (Qwest)
303-239 Lumen (Qwest)
303-240 Spok
303-241 Verizon Wireless
303-242 Verizon Business (MCImetro)
303-243 N.E. Colorado Cellular
303-244 Lumen (Qwest)
303-245 Lumen (Qwest)
303-246 T-Mobile
303-247 Lumen (Qwest)
303-248 AT&T (Teleport)
303-249 AT&T Mobility
303-250 AT&T Mobility
303-251 Spok
303-252 Lumen (Qwest)
303-253 AT&T (Teleport)
303-254 Lumen (Qwest)
303-255 Lumen (Qwest)
303-256 AT&T (Teleport)
303-257 T-Mobile
303-258 Lumen (Qwest)
303-259 American Messaging Services
303-260 Lumen (Qwest)
303-261 Lumen (Qwest)
303-262 AT&T (Teleport)
303-263 Verizon Wireless
303-264 AT&T (Teleport)
303-265 Lumen (Qwest)
303-266 Spok
303-267 Lumen (Qwest)
303-268 Lumen (Level 3)
303-269 Lumen (Qwest)
303-270 Lumen (Qwest)
303-271 Lumen (Qwest)
303-272 Lumen (Qwest)
303-273 Lumen (Qwest)
303-274 Lumen (Qwest)
303-275 Lumen (Qwest)
303-276 Onvoy (Sinch)
303-277 Lumen (Qwest)
303-278 Lumen (Qwest)
303-279 Lumen (Qwest)
303-280 Lumen (Qwest)
303-281 Lumen (Qwest)
303-282 Lumen (Qwest)
303-283 Lumen (Qwest)
303-284 Comcast (Xfinity)
303-285 Lumen (Level 3)
303-286 Lumen (Qwest)
303-287 Lumen (Qwest)
303-288 Lumen (Qwest)
303-289 Lumen (Qwest)
303-290 Lumen (Qwest)
303-291 Lumen (Qwest)
303-292 Lumen (Qwest)
303-293 Lumen (Qwest)
303-294 Lumen (Qwest)
303-295 Lumen (Qwest)
303-296 Lumen (Qwest)
303-297 Lumen (Qwest)
303-298 Lumen (Qwest)
303-299 Lumen (Qwest)
303-300 Lumen (Qwest)
303-301 Lumen (Level 3)
303-302 Verizon Business (MCImetro)
303-303 Hd Carrier
303-305 Verizon Business (MCImetro)
303-306 Lumen (Qwest)
303-307 Lumen (Qwest)
303-308 Lumen (Qwest)
303-309 Lumen (Level 3)
303-310 American Messaging Services
303-312 Lumen (Qwest)
303-313 Lumen (Qwest)
303-314 Lumen (Qwest)
303-315 Lumen (Qwest)
303-316 Lumen (Qwest)
303-317 Lumen (Qwest)
303-318 Lumen (Qwest)
303-319 Elbert County Wireless
303-320 Lumen (Qwest)
303-321 Lumen (Qwest)
303-322 Lumen (Qwest)
303-323 Verizon Business (MCImetro)
303-324 AT&T Mobility
303-325 Lumen (Level 3)
303-326 Lumen (Qwest)
303-327 Lumen (Level 3)
303-328 Verizon Business (MCImetro)
303-329 Lumen (Qwest)
303-330 Onvoy (Sinch)
303-331 Lumen (Qwest)
303-332 T-Mobile
303-333 Lumen (Qwest)
303-334 Verizon Business (MCImetro)
303-335 Verizon Wireless
303-336 Lumen (Qwest)
303-337 Lumen (Qwest)
303-338 Lumen (Qwest)
303-339 Onvoy (Sinch)
303-340 Lumen (Qwest)
303-341 Lumen (Qwest)
303-342 Lumen (Qwest)
303-343 Lumen (Qwest)
303-344 Lumen (Qwest)
303-345 Lumen (Level 3)
303-346 Lumen (Qwest)
303-347 Lumen (Qwest)
303-348 Lumen (Qwest)
303-349 Verizon Wireless
303-350 AT&T Mobility
303-352 Lumen (Qwest)
303-353 Comcast (Xfinity)
303-354 AT&T (Teleport)
303-355 Lumen (Qwest)
303-356 T-Mobile
303-357 Verizon Business (MCImetro)
303-358 Verizon Wireless
303-359 T-Mobile
303-360 Lumen (Qwest)
303-361 Lumen (Qwest)
303-362 AT&T (Teleport)
303-363 Lumen (Qwest)
303-364 Lumen (Qwest)
303-365 Lumen (Qwest)
303-366 Lumen (Qwest)
303-367 Lumen (Qwest)
303-368 Lumen (Qwest)
303-369 Lumen (Qwest)
303-370 Lumen (Qwest)
303-371 Lumen (Qwest)
303-372 Lumen (Qwest)
303-373 Lumen (Qwest)
303-374 AT&T (Teleport)
303-375 Lumen (Qwest)
303-376 Lumen (Level 3)
303-377 Lumen (Qwest)
303-378 AT&T Mobility
303-379 AT&T (Teleport)
303-380 Lumen (Qwest)
303-381 Lumen (Level 3)
303-382 Lumen (Qwest)
303-383 Lumen (Qwest)
303-384 Lumen (Qwest)
303-385 Lumen (Level 3)
303-386 Lumen (Level 3)
303-387 Lumen (Qwest)
303-388 Lumen (Qwest)
303-389 Lumen (Qwest)
303-390 Verizon Business (MCImetro)
303-391 Lumen (Qwest)
303-392 Verizon Wireless
303-393 Lumen (Qwest)
303-394 Lumen (Qwest)
303-395 Lumen (Level 3)
303-396 Live Wire Networks
303-397 Lumen (Qwest)
303-398 Lumen (Qwest)
303-399 Lumen (Qwest)
303-400 Lumen (Qwest)
303-401 Lumen (Qwest)
303-402 Lumen (Qwest)
303-403 Lumen (Qwest)
303-404 Lumen (Qwest)
303-405 Lumen (Qwest)
303-406 Lumen (Level 3)
303-407 Onvoy (Sinch)
303-408 AT&T Mobility
303-409 Lumen (Level 3)
303-410 Lumen (Qwest)
303-412 Lumen (Qwest)
303-413 Lumen (Qwest)
303-414 Lumen (Level 3)
303-415 Lumen (Qwest)
303-416 Lumen (Level 3)
303-417 Lumen (Qwest)
303-418 Lumen (Level 3)
303-419 T-Mobile
303-420 Lumen (Qwest)
303-421 Lumen (Qwest)
303-422 Lumen (Qwest)
303-423 Lumen (Qwest)
303-424 Lumen (Qwest)
303-425 Lumen (Qwest)
303-426 Lumen (Qwest)
303-427 Lumen (Qwest)
303-428 Lumen (Qwest)
303-429 Lumen (Qwest)
303-430 Lumen (Qwest)
303-431 Lumen (Qwest)
303-432 Lumen (Qwest)
303-433 Lumen (Qwest)
303-434 T-Mobile
303-435 T-Mobile
303-436 Lumen (Qwest)
303-437 T-Mobile
303-438 Lumen (Qwest)
303-439 Lumen (Qwest)
303-440 Lumen (Qwest)
303-441 Lumen (Qwest)
303-442 Lumen (Qwest)
303-443 Lumen (Qwest)
303-444 Lumen (Qwest)
303-445 Lumen (Qwest)
303-446 Lumen (Qwest)
303-447 Lumen (Qwest)
303-448 Lumen (Qwest)
303-449 Lumen (Qwest)
303-450 Lumen (Qwest)
303-451 Lumen (Qwest)
303-452 Lumen (Qwest)
303-453 Lumen (Qwest)
303-454 Lumen (Qwest)
303-455 Lumen (Qwest)
303-456 Lumen (Qwest)
303-457 Lumen (Qwest)
303-458 Lumen (Qwest)
303-459 Lumen (Qwest)
303-460 Lumen (Qwest)
303-461 Spok
303-462 Lumen (Qwest)
303-463 Lumen (Qwest)
303-464 Lumen (Qwest)
303-465 Lumen (Qwest)
303-466 Lumen (Qwest)
303-467 Lumen (Qwest)
303-468 Onvoy (Sinch)
303-469 Lumen (Qwest)
303-470 Lumen (Qwest)
303-471 Lumen (Qwest)
303-472 T-Mobile
303-473 Lumen (Qwest)
303-474 AT&T (Teleport)
303-475 AT&T Mobility
303-476 Verizon Business (MCImetro)
303-477 Lumen (Qwest)
303-478 AT&T Mobility
303-479 AT&T (Teleport)
303-480 Lumen (Qwest)
303-481 Verizon Business (MCImetro)
303-482 Lumen (Level 3)
303-483 Lumen (Level 3)
303-484 AT&T (Teleport)
303-486 Lumen (Qwest)
303-487 Lumen (Qwest)
303-488 Lumen (Qwest)
303-489 Verizon Wireless
303-490 Spok
303-491 Onvoy (Sinch)
303-492 Lumen (Qwest)
303-493 Lumen (Level 3)
303-494 Lumen (Qwest)
303-495 Verizon Business (MCImetro)
303-496 Verizon Business (MCImetro)
303-497 Lumen (Qwest)
303-498 Comcast (Xfinity)
303-499 Lumen (Qwest)
303-501 Verizon Wireless
303-503 Verizon Wireless
303-504 Lumen (Qwest)
303-505 T-Mobile
303-507 T-Mobile
303-508 American Messaging Services
303-509 American Messaging Services
303-510 American Messaging Services
303-512 Lumen (Qwest)
303-513 AT&T Mobility
303-514 Verizon Wireless
303-515 Onvoy (Sinch)
303-516 Lumen (Qwest)
303-517 AT&T Mobility
303-518 Verizon Wireless
303-519 Verizon Wireless
303-520 T-Mobile
303-521 T-Mobile
303-522 T-Mobile
303-523 T-Mobile
303-524 AT&T (Teleport)
303-525 T-Mobile
303-526 Lumen (Qwest)
303-527 Lumen (Qwest)
303-528 American Messaging Services
303-529 Onvoy (Sinch)
303-530 Lumen (Qwest)
303-531 Verizon Business (MCImetro)
303-533 Lumen (Qwest)
303-534 Lumen (Qwest)
303-537 AT&T (Teleport)
303-538 Lumen (Qwest)
303-539 Verizon Business (MCImetro)
303-540 Spok
303-541 Lumen (Qwest)
303-542 Verizon Business (MCImetro)
303-543 Lumen (Qwest)
303-544 Lumen (Qwest)
303-545 Lumen (Qwest)
303-546 Lumen (Qwest)
303-547 Lumen (Level 3)
303-548 Verizon Wireless
303-549 Verizon Wireless
303-550 Verizon Wireless
303-551 Verizon Business (MCImetro)
303-552 Lumen (Level 3)
303-553 Spok
303-554 Lumen (Qwest)
303-556 Lumen (Qwest)
303-557 Lumen (Level 3)
303-558 Lumen (Level 3)
303-559 American Messaging Services
303-560 Spok
303-561 Lumen (Qwest)
303-562 Lumen (Level 3)
303-563 Lumen (Level 3)
303-564 T-Mobile
303-565 Onvoy (Sinch)
303-566 Verizon Business (MCImetro)
303-567 Lumen (Qwest)
303-568 AT&T (Teleport)
303-570 AT&T Mobility
303-571 Lumen (Qwest)
303-572 Lumen (Qwest)
303-573 Lumen (Qwest)
303-574 Lumen (Qwest)
303-575 Lumen (Qwest)
303-576 Lumen (Qwest)
303-577 Allstream
303-579 Verizon Wireless
303-580 American Messaging Services
303-581 Lumen (Qwest)
303-582 Lumen (Qwest)
303-583 AT&T (Teleport)
303-584 Lumen (Qwest)
303-585 Lumen (Qwest)
303-586 Lumen (Level 3)
303-587 T-Mobile
303-588 AT&T Mobility
303-589 AT&T Mobility
303-590 Lumen (Level 3)
303-591 T-Mobile
303-592 Lumen (Qwest)
303-593 AT&T (Teleport)
303-594 Verizon Wireless
303-595 Lumen (Qwest)
303-596 T-Mobile
303-597 Allstream
303-598 T-Mobile
303-599 Spok
303-600 AT&T (Teleport)
303-601 AT&T Mobility
303-602 Lumen (Qwest)
303-603 Lumen (Qwest)
303-604 Lumen (Qwest)
303-605 Lumen (Qwest)
303-606 Lumen (Qwest)
303-607 Lumen (Qwest)
303-608 Lumen (Qwest)
303-609 Spok
303-610 Spok
303-612 Spok
303-613 Spok
303-614 Lumen (Qwest)
303-615 Lumen (Qwest)
303-617 Lumen (Qwest)
303-618 AT&T Mobility
303-619 AT&T Mobility
303-620 Lumen (Qwest)
303-621 Lumen (Qwest)
303-623 Lumen (Qwest)
303-624 Lumen (Qwest)
303-625 Lumen (Level 3)
303-626 Lumen (Qwest)
303-627 Lumen (Qwest)
303-628 Lumen (Qwest)
303-629 Lumen (Qwest)
303-630 Lumen (Qwest)
303-631 Lumen (Qwest)
303-632 AT&T (Teleport)
303-633 Lumen (Qwest)
303-634 Lumen (Qwest)
303-635 Lumen (Qwest)
303-636 Lumen (Qwest)
303-637 Lumen (Qwest)
303-638 AT&T Mobility
303-639 Lumen (Qwest)
303-640 Lumen (Qwest)
303-641 T-Mobile
303-642 Lumen (Qwest)
303-643 Lumen (Qwest)
303-645 Lumen (Qwest)
303-646 Lumen (Qwest)
303-648 Lumen (Qwest)
303-649 Lumen (Qwest)
303-650 Lumen (Qwest)
303-653 Lumen (Level 3)
303-654 Lumen (Qwest)
303-655 Lumen (Qwest)
303-656 Verizon Wireless
303-657 Lumen (Qwest)
303-658 Lumen (Qwest)
303-659 Lumen (Qwest)
303-660 Lumen (Qwest)
303-661 Lumen (Qwest)
303-662 Lumen (Qwest)
303-663 Lumen (Qwest)
303-664 Lumen (Qwest)
303-665 Lumen (Qwest)
303-666 Lumen (Qwest)
303-667 T-Mobile
303-668 T-Mobile
303-669 T-Mobile
303-670 Lumen (Qwest)
303-671 Lumen (Qwest)
303-672 Lumen (Qwest)
303-673 Lumen (Qwest)
303-674 Lumen (Qwest)
303-675 Lumen (Qwest)
303-676 Lumen (Qwest)
303-677 Lumen (Qwest)
303-679 Lumen (Qwest)
303-680 Lumen (Qwest)
303-681 Lumen (Qwest)
303-683 Lumen (Qwest)
303-685 Lumen (Qwest)
303-686 Spok
303-687 Spok
303-688 Lumen (Qwest)
303-689 Lumen (Qwest)
303-690 Lumen (Qwest)
303-691 Lumen (Qwest)
303-692 Lumen (Qwest)
303-693 Lumen (Qwest)
303-694 Lumen (Qwest)
303-695 Lumen (Qwest)
303-696 Lumen (Qwest)
303-697 Lumen (Qwest)
303-698 Lumen (Qwest)
303-699 Lumen (Qwest)
303-701 Communications Unlimited
303-703 Lumen (Qwest)
303-704 Verizon Business (MCImetro)
303-705 Lumen (Qwest)
303-706 Lumen (Qwest)
303-707 Lumen (Qwest)
303-708 Lumen (Qwest)
303-712 Lumen (Qwest)
303-713 Lumen (Qwest)
303-714 Lumen (Qwest)
303-715 Lumen (Qwest)
303-716 Lumen (Qwest)
303-721 Lumen (Qwest)
303-722 Lumen (Qwest)
303-723 AT&T (Teleport)
303-724 Lumen (Qwest)
303-725 T-Mobile
303-726 Verizon Wireless
303-727 Lumen (Qwest)
303-728 AT&T (Teleport)
303-729 Verizon Business (MCImetro)
303-730 Lumen (Qwest)
303-731 Lumen (Level 3)
303-733 Lumen (Qwest)
303-734 Lumen (Qwest)
303-735 Lumen (Qwest)
303-736 AT&T (Teleport)
303-737 Lumen (Qwest)
303-738 Lumen (Qwest)
303-739 Lumen (Qwest)
303-740 Lumen (Qwest)
303-741 Lumen (Qwest)
303-742 Lumen (Qwest)
303-743 Lumen (Qwest)
303-744 Lumen (Qwest)
303-745 Lumen (Qwest)
303-748 AT&T Mobility
303-749 AT&T (Teleport)
303-750 Lumen (Qwest)
303-751 Lumen (Qwest)
303-752 Lumen (Qwest)
303-753 Lumen (Qwest)
303-754 Lumen (Qwest)
303-755 Lumen (Qwest)
303-756 Lumen (Qwest)
303-757 Lumen (Qwest)
303-758 Lumen (Qwest)
303-759 Lumen (Qwest)
303-760 Spok
303-761 Lumen (Qwest)
303-762 Lumen (Qwest)
303-763 Lumen (Qwest)
303-764 Lumen (Qwest)
303-765 Lumen (Qwest)
303-766 Lumen (Qwest)
303-767 American Messaging Services
303-768 Lumen (Qwest)
303-770 Lumen (Qwest)
303-771 Lumen (Qwest)
303-773 Lumen (Qwest)
303-777 Lumen (Qwest)
303-778 Lumen (Qwest)
303-779 Lumen (Qwest)
303-780 Lumen (Qwest)
303-781 Lumen (Qwest)
303-782 Lumen (Qwest)
303-783 Lumen (Qwest)
303-784 Lumen (Qwest)
303-785 Verizon Business (MCImetro)
303-786 Lumen (Qwest)
303-787 Lumen (Qwest)
303-788 Lumen (Qwest)
303-789 Lumen (Qwest)
303-790 Lumen (Qwest)
303-791 Lumen (Qwest)
303-792 Lumen (Qwest)
303-793 Lumen (Qwest)
303-794 Lumen (Qwest)
303-795 Lumen (Qwest)
303-796 Lumen (Qwest)
303-797 Lumen (Qwest)
303-798 Lumen (Qwest)
303-799 Lumen (Qwest)
303-800 Lumen (Level 3)
303-801 Verizon Business (MCImetro)
303-802 Lumen (Level 3)
303-803 Lumen (Level 3)
303-804 Lumen (Qwest)
303-805 Lumen (Qwest)
303-806 Lumen (Qwest)
303-807 AT&T Mobility
303-808 AT&T Mobility
303-809 AT&T Mobility
303-810 AT&T Mobility
303-812 Lumen (Qwest)
303-813 Lumen (Qwest)
303-814 Lumen (Qwest)
303-815 Forethought.Net
303-817 Verizon Wireless
303-818 Verizon Wireless
303-819 Verizon Wireless
303-820 Lumen (Qwest)
303-821 Spok
303-824 AT&T (Teleport)
303-825 Lumen (Qwest)
303-826 Spok
303-828 Lumen (Qwest)
303-829 Verizon Wireless
303-830 Lumen (Qwest)
303-831 Lumen (Qwest)
303-832 Lumen (Qwest)
303-833 Lumen (Qwest)
303-835 Lumen (Level 3)
303-836 Communications Unlimited
303-837 Lumen (Qwest)
303-839 Lumen (Qwest)
303-840 Lumen (Qwest)
303-841 Lumen (Qwest)
303-842 Verizon Wireless
303-843 Lumen (Qwest)
303-844 Lumen (Qwest)
303-846 Lumen (Qwest)
303-847 Lumen (Level 3)
303-850 Lumen (Qwest)
303-851 Spok
303-852 Spok
303-853 Lumen (Qwest)
303-854 Lumen (Level 3)
303-855 Spok
303-856 Lumen (Level 3)
303-858 Lumen (Qwest)
303-859 Verizon Wireless
303-860 Lumen (Qwest)
303-861 Lumen (Qwest)
303-862 Comcast (Xfinity)
303-863 Lumen (Qwest)
303-864 Lumen (Qwest)
303-865 Lumen (Level 3)
303-866 Lumen (Qwest)
303-867 Newcloud Networks
303-868 Verizon Wireless
303-869 Lumen (Qwest)
303-870 Verizon Wireless
303-871 Lumen (Qwest)
303-872 Lumen (Level 3)
303-873 Lumen (Qwest)
303-874 Lumen (Level 3)
303-875 T-Mobile
303-876 Verizon Business (MCImetro)
303-877 Verizon Wireless
303-878 Spok
303-879 Onvoy (Sinch)
303-880 Verizon Wireless
303-881 AT&T Mobility
303-882 AT&T Mobility
303-883 AT&T Mobility
303-884 AT&T Mobility
303-885 AT&T Mobility
303-886 AT&T Mobility
303-887 AT&T Mobility
303-888 AT&T Mobility
303-889 Lumen (Qwest)
303-890 Spok
303-891 Spok
303-892 Lumen (Qwest)
303-893 Lumen (Qwest)
303-894 Lumen (Qwest)
303-895 Verizon Wireless
303-896 Lumen (Qwest)
303-897 Spok
303-898 AT&T Mobility
303-899 Lumen (Qwest)
303-901 T-Mobile
303-902 Verizon Wireless
303-903 Verizon Wireless
303-904 Lumen (Qwest)
303-905 Verizon Wireless
303-906 Verizon Wireless
303-907 Verizon Wireless
303-908 Verizon Wireless
303-909 Verizon Wireless
303-910 Verizon Wireless
303-912 Verizon Wireless
303-913 Verizon Wireless
303-914 Lumen (Qwest)
303-915 Verizon Wireless
303-916 Verizon Wireless
303-917 Verizon Wireless
303-918 Verizon Wireless
303-919 Verizon Wireless
303-920 Lumen (Qwest)
303-921 Verizon Wireless
303-922 Lumen (Qwest)
303-923 Lumen (Level 3)
303-924 Lumen (Qwest)
303-925 Lumen (Qwest)
303-926 Lumen (Qwest)
303-927 AT&T (Teleport)
303-928 Verizon Business (MCImetro)
303-929 Verizon Wireless
303-930 Lumen (Qwest)
303-931 T-Mobile
303-932 Lumen (Qwest)
303-933 Lumen (Qwest)
303-934 Lumen (Qwest)
303-935 Lumen (Qwest)
303-936 Lumen (Qwest)
303-937 Lumen (Qwest)
303-938 Lumen (Qwest)
303-939 Lumen (Qwest)
303-940 Lumen (Qwest)
303-941 Verizon Wireless
303-942 AT&T (Teleport)
303-943 Skyetel
303-944 T-Mobile
303-945 Comcast (Xfinity)
303-946 T-Mobile
303-947 Verizon Wireless
303-948 Lumen (Qwest)
303-949 T-Mobile
303-951 Lumen (Level 3)
303-952 Lumen (Level 3)
303-953 Lumen (Level 3)
303-954 Lumen (Level 3)
303-955 Lumen (Level 3)
303-957 Lumen (Level 3)
303-960 T-Mobile
303-961 T-Mobile
303-962 Onvoy (Sinch)
303-963 Lumen (Level 3)
303-964 Lumen (Qwest)
303-965 Lumen (Qwest)
303-966 Lumen (Qwest)
303-967 Lumen (Qwest)
303-968 Verizon Business (MCImetro)
303-969 Lumen (Qwest)
303-971 Lumen (Qwest)
303-972 Lumen (Qwest)
303-973 Lumen (Qwest)
303-974 Lumen (Level 3)
303-975 Lumen (Qwest)
303-977 Lumen (Qwest)
303-978 Lumen (Qwest)
303-979 Lumen (Qwest)
303-980 Lumen (Qwest)
303-981 Verizon Wireless
303-982 Lumen (Qwest)
303-984 Lumen (Qwest)
303-985 Lumen (Qwest)
303-986 Lumen (Qwest)
303-987 Lumen (Qwest)
303-988 Lumen (Qwest)
303-989 Lumen (Qwest)
303-991 Verizon Business (MCImetro)
303-992 Lumen (Qwest)
303-993 Onvoy (Sinch)
303-994 T-Mobile
303-995 T-Mobile
303-996 Allstream
303-997 Comcast (Xfinity)
303-998 Lumen (Qwest)
303-999 Comcast (Xfinity)
720-200 Lumen (Qwest)
720-201 AT&T Mobility
720-202 Verizon Wireless
720-203 T-Mobile
720-205 T-Mobile
720-206 Verizon Business (MCImetro)
720-207 Verizon Business (MCImetro)
720-208 Verizon Business (MCImetro)
720-209 T-Mobile
720-210 Verizon Business (MCImetro)
720-212 Verizon Business (MCImetro)
720-213 Paetec Itel
720-214 Paetec Itel
720-215 Verizon Wireless
720-216 AT&T (Teleport)
720-217 T-Mobile
720-218 T-Mobile
720-219 Verizon Wireless
720-220 T-Mobile
720-221 Verizon Business (MCImetro)
720-222 Verizon Business (MCImetro)
720-223 Verizon Business (MCImetro)
720-224 Verizon Business (MCImetro)
720-225 Verizon Business (MCImetro)
720-226 Verizon Business (MCImetro)
720-227 Verizon Business (MCImetro)
720-228 Verizon Business (MCImetro)
720-229 Verizon Business (MCImetro)
720-230 Xo Colorado
720-231 T-Mobile
720-232 T-Mobile
720-233 T-Mobile
720-234 T-Mobile
720-235 T-Mobile
720-236 T-Mobile
720-237 AT&T Mobility
720-238 T-Mobile
720-239 AT&T (Teleport)
720-240 Verizon Business (MCImetro)
720-241 Verizon Business (MCImetro)
720-242 Lumen (Qwest)
720-243 AT&T Mobility
720-244 AT&T Mobility
720-245 Allstream
720-246 Verizon Business (MCImetro)
720-247 Verizon Business (MCImetro)
720-248 Onvoy (Sinch)
720-249 Verizon Business (MCImetro)
720-250 Verizon Business (MCImetro)
720-251 Lumen (Level 3)
720-252 T-Mobile
720-253 T-Mobile
720-254 T-Mobile
720-255 T-Mobile
720-256 T-Mobile
720-257 Verizon Business (MCImetro)
720-258 AT&T (Teleport)
720-259 Lumen (Level 3)
720-260 T-Mobile
720-261 T-Mobile
720-262 Lumen (Level 3)
720-263 Lumen (Level 3)
720-264 Lumen (Qwest)
720-265 Verizon Business (MCImetro)
720-266 Lumen (Level 3)
720-267 Lumen (Qwest)
720-268 Lumen (Qwest)
720-269 AT&T (Teleport)
720-270 T-Mobile
720-271 T-Mobile
720-272 AT&T Mobility
720-273 AT&T Mobility
720-274 Paetec Itel
720-275 AT&T Mobility
720-276 AT&T Mobility
720-277 Lumen (Level 3)
720-278 Lumen (Level 3)
720-279 Lumen (Level 3)
720-280 T-Mobile
720-281 Verizon Wireless
720-282 Lumen (Level 3)
720-283 Lumen (Qwest)
720-284 Verizon Business (MCImetro)
720-285 Xo Colorado
720-286 AT&T (Teleport)
720-287 Comcast (Xfinity)
720-288 Bandwidth
720-289 AT&T Mobility
720-290 T-Mobile
720-291 T-Mobile
720-292 AT&T Mobility
720-293 Verizon Business (MCImetro)
720-294 Verizon Business (MCImetro)
720-295 Bandwidth
720-296 AT&T Mobility
720-297 AT&T Mobility
720-298 AT&T Mobility
720-299 T-Mobile
720-300 T-Mobile
720-301 T-Mobile
720-302 AT&T (Teleport)
720-303 Bandwidth
720-304 Lumen (Qwest)
720-305 Lumen (Level 3)
720-306 Allstream
720-308 AT&T Mobility
720-309 AT&T Mobility
720-312 T-Mobile
720-313 T-Mobile
720-314 T-Mobile
720-315 Onvoy (Sinch)
720-316 Bandwidth
720-317 T-Mobile
720-318 T-Mobile
720-319 T-Mobile
720-320 AT&T Mobility
720-321 Lumen (Qwest)
720-322 Lumen (Qwest)
720-323 T-Mobile
720-324 Comcast (Xfinity)
720-325 T-Mobile
720-326 AT&T Mobility
720-327 AT&T Mobility
720-328 Comcast (Xfinity)
720-329 AT&T Mobility
720-330 Lumen (Level 3)
720-331 T-Mobile
720-332 Verizon Business (MCImetro)
720-333 T-Mobile
720-334 T-Mobile
720-335 T-Mobile
720-337 Lumen (Qwest)
720-338 AT&T Mobility
720-339 T-Mobile
720-341 T-Mobile
720-342 AT&T (Teleport)
720-343 Lumen (Level 3)
720-344 Lumen (Qwest)
720-345 Zippytechorporated
720-346 Verizon Wireless
720-347 Lumen (Level 3)
720-348 Lumen (Qwest)
720-349 AT&T (Teleport)
720-350 T-Mobile
720-351 T-Mobile
720-352 T-Mobile
720-353 T-Mobile
720-354 Lumen (Level 3)
720-355 Verizon Wireless
720-356 AT&T (Teleport)
720-357 AT&T Mobility
720-359 Lumen (Qwest)
720-360 AT&T Mobility
720-361 Allstream
720-362 Lumen (Qwest)
720-363 Metropcs
720-364 AT&T Mobility
720-365 AT&T Mobility
720-366 AT&T Mobility
720-367 Verizon Business (MCImetro)
720-368 Verizon Business (MCImetro)
720-369 AT&T Mobility
720-370 Bandwidth
720-371 T-Mobile
720-372 T-Mobile
720-373 T-Mobile
720-374 Lumen (Qwest)
720-375 AT&T Mobility
720-376 Allstream
720-377 Verizon Business (MCImetro)
720-379 Lumen (Level 3)
720-380 T-Mobile
720-381 Comcast (Xfinity)
720-382 Allstream
720-384 Verizon Business (MCImetro)
720-385 Verizon Business (MCImetro)
720-387 Lumen (Level 3)
720-388 Verizon Wireless
720-389 Verizon Business (MCImetro)
720-390 Verizon Wireless
720-391 Verizon Wireless
720-393 Lumen (Level 3)
720-394 T-Mobile
720-395 At&T - Local
720-396 At&T - Local
720-397 At&T - Local
720-398 AT&T Mobility
720-399 Lumen (Level 3)
720-400 T-Mobile
720-401 T-Mobile
720-402 Allstream
720-403 Peerless Network
720-404 AT&T Mobility
720-405 Intrado Communications
720-406 Lumen (Qwest)
720-407 Onvoy (Sinch)
720-408 Bandwidth
720-409 Paetec Itel
720-410 Comcast (Xfinity)
720-412 AT&T Mobility
720-413 Verizon Wireless
720-415 Verizon Wireless
720-416 Metropcs
720-417 Allstream
720-418 Verizon Business (MCImetro)
720-419 T-Mobile
720-420 Lumen (Level 3)
720-421 T-Mobile
720-422 AT&T Mobility
720-423 Lumen (Qwest)
720-424 Lumen (Qwest)
720-425 Verizon Wireless
720-426 Lumen (Qwest)
720-427 T-Mobile
720-428 Onvoy (Sinch)
720-429 AT&T Mobility
720-430 At&T - Local
720-431 AT&T Mobility
720-432 Bandwidth
720-433 Lumen (Qwest)
720-434 AT&T Mobility
720-435 AT&T Mobility
720-436 AT&T Mobility
720-437 Verizon Wireless
720-439 AT&T Mobility
720-440 AT&T Mobility
720-441 Bandwidth
720-443 Bandwidth
720-444 Lumen (Qwest)
720-445 Verizon Wireless
720-446 Verizon Business (MCImetro)
720-447 AT&T Mobility
720-448 AT&T Mobility
720-449 Verizon Business (MCImetro)
720-450 Verizon Business (MCImetro)
720-451 T-Mobile
720-452 Peerless Network
720-454 Paetec Itel
720-455 Lumen (Qwest)
720-456 Lumen (Level 3)
720-457 Lumen (Level 3)
720-458 Lumen (Level 3)
720-459 Onvoy (Sinch)
720-460 Allstream
720-461 Metropcs
720-462 Verizon Business (MCImetro)
720-464 Bandwidth
720-465 AT&T Mobility
720-467 Verizon Wireless
720-468 Lumen (Level 3)
720-469 AT&T Mobility
720-470 Verizon Wireless
720-471 Verizon Wireless
720-472 AT&T (Teleport)
720-473 Onvoy (Sinch)
720-474 T-Mobile
720-475 AT&T (Teleport)
720-476 AT&T Mobility
720-477 Onvoy (Sinch)
720-478 Lumen (Level 3)
720-479 AT&T (Teleport)
720-480 AT&T Mobility
720-481 AT&T Mobility
720-482 Lumen (Qwest)
720-483 AT&T Mobility
720-484 Allstream
720-485 Comcast (Xfinity)
720-486 AT&T Mobility
720-488 Lumen (Qwest)
720-489 Lumen (Qwest)
720-490 T-Mobile
720-492 T-Mobile
720-493 Lumen (Qwest)
720-495 AT&T Mobility
720-496 Lumen (Level 3)
720-497 Lumen (Qwest)
720-498 Verizon Wireless
720-499 T-Mobile
720-500 Peerless Network
720-501 Metropcs
720-502 Comcast (Xfinity)
720-503 AT&T Mobility
720-504 Bandwidth
720-505 Verizon Wireless
720-506 Lumen (Level 3)
720-507 Bandwidth
720-508 Allstream
720-509 Verizon Business (MCImetro)
720-510 Comcast (Xfinity)
720-512 Comcast (Xfinity)
720-513 Onvoy (Sinch)
720-514 AT&T (Teleport)
720-515 Bandwidth
720-516 Lumen (Qwest)
720-517 AT&T Mobility
720-518 Allstream
720-519 AT&T (Teleport)
720-520 Onvoy (Sinch)
720-521 American Messaging Services
720-522 Verizon Business (MCImetro)
720-523 Lumen (Qwest)
720-524 Lumen (Qwest)
720-525 T-Mobile
720-527 Teliax
720-528 Lumen (Qwest)
720-529 Lumen (Qwest)
720-530 AT&T Mobility
720-531 Comcast (Xfinity)
720-532 AT&T (Teleport)
720-533 AT&T (Teleport)
720-535 AT&T (Teleport)
720-536 Lumen (Qwest)
720-537 Fasttrack Communications
720-539 AT&T Mobility
720-540 Lumen (Qwest)
720-541 Verizon Wireless
720-542 Lumen (Qwest)
720-543 Peerless Network
720-544 Lumen (Qwest)
720-545 Lumen (Level 3)
720-546 T-Mobile
720-548 Lumen (Level 3)
720-549 Lumen (Level 3)
720-550 Paetec Itel
720-551 AT&T Mobility
720-553 Lumen (Qwest)
720-554 Lumen (Qwest)
720-556 Verizon Wireless
720-557 Verizon Wireless
720-558 Lumen (Qwest)
720-559 AT&T (Teleport)
720-560 AT&T Mobility
720-561 Lumen (Qwest)
720-562 Lumen (Qwest)
720-563 Lumen (Qwest)
720-564 Lumen (Qwest)
720-565 Lumen (Qwest)
720-566 Lumen (Qwest)
720-567 Lumen (Level 3)
720-568 Lumen (Qwest)
720-569 AT&T Mobility
720-570 Lumen (Qwest)
720-572 AT&T (Teleport)
720-573 Lumen (Level 3)
720-574 Bandwidth
720-575 Onvoy (Sinch)
720-576 Verizon Wireless
720-577 Lumen (Level 3)
720-578 Lumen (Qwest)
720-579 Verizon Business (MCImetro)
720-581 T-Mobile
720-582 Verizon Wireless
720-583 Onvoy (Sinch)
720-584 Verizon Wireless
720-585 T-Mobile
720-586 Metropcs
720-587 AT&T (Teleport)
720-588 Nuso
720-589 T-Mobile
720-590 Onvoy (Sinch)
720-591 Verizon Wireless
720-592 T-Mobile
720-593 Lumen (Level 3)
720-594 Onvoy (Sinch)
720-595 Lumen (Level 3)
720-596 AT&T (Teleport)
720-598 Bandwidth
720-599 Allstream
720-601 Verizon Wireless
720-602 T-Mobile
720-603 Lumen (Level 3)
720-604 Bandwidth
720-605 Onvoy (Sinch)
720-607 Verizon Wireless
720-609 AT&T Mobility
720-610 Verizon Wireless
720-612 T-Mobile
720-614 Airespring
720-616 Lumen (Level 3)
720-617 Paetec Itel
720-618 Verizon Wireless
720-620 AT&T Mobility
720-621 AT&T Mobility
720-622 Lumen (Qwest)
720-623 Onvoy (Sinch)
720-624 AT&T (Teleport)
720-625 Paetec Itel
720-626 Verizon Wireless
720-627 Lumen (Qwest)
720-628 AT&T Mobility
720-629 AT&T Mobility
720-630 AT&T Mobility
720-631 Verizon Business (MCImetro)
720-632 AT&T (Teleport)
720-633 AT&T Mobility
720-634 Verizon Business (MCImetro)
720-635 AT&T Mobility
720-636 Verizon Wireless
720-637 Onvoy (Sinch)
720-638 Comcast (Xfinity)
720-639 Onvoy (Sinch)
720-641 T-Mobile
720-642 Verizon Wireless
720-643 Lumen (Level 3)
720-644 Paetec Itel
720-645 T-Mobile
720-646 AT&T Mobility
720-647 Onvoy (Sinch)
720-648 Verizon Wireless
720-650 Onvoy (Sinch)
720-651 Verizon Wireless
720-653 Verizon Wireless
720-654 AT&T Mobility
720-655 T-Mobile
720-656 AT&T Mobility
720-657 Bandwidth
720-658 Telstar Communications
720-659 Vonage
720-660 Verizon Wireless
720-661 Verizon Wireless
720-662 T-Mobile
720-663 Bandwidth
720-665 Verizon Wireless
720-666 Peerless Network
720-667 Comcast (Xfinity)
720-668 Verizon Wireless
720-670 Verizon Wireless
720-671 Verizon Wireless
720-672 Verizon Wireless
720-673 Exiant Communications
720-674 Comcast (Xfinity)
720-675 AT&T Mobility
720-676 Verizon Business (MCImetro)
720-677 Onvoy (Sinch)
720-678 Csc Wireless
720-681 T-Mobile
720-682 Verizon Wireless
720-685 Lumen (Qwest)
720-686 Verizon Business (MCImetro)
720-687 T-Mobile
720-688 AT&T Mobility
720-689 Bandwidth
720-690 AT&T Mobility
720-691 T-Mobile
720-692 Metropcs
720-693 Verizon Wireless
720-694 T-Mobile
720-695 Verizon Business (MCImetro)
720-696 Bandwidth
720-697 Lumen (CenturyLink)
720-699 Onvoy (Sinch)
720-701 AT&T (Teleport)
720-703 Nuso
720-704 T-Mobile
720-705 AT&T Mobility
720-706 Onvoy (Sinch)
720-707 Onvoy (Sinch)
720-708 Teliax
720-709 Paetec Itel
720-710 Onvoy (Sinch)
720-716 Lumen (Level 3)
720-717 AT&T Mobility
720-719 Bandwidth
720-720 AT&T Mobility
720-721 The Voice Application Network
720-722 Lumen (CenturyLink)
720-723 Allstream
720-724 Allstream
720-725 T-Mobile
720-726 Comcast (Xfinity)
720-728 Lumen (Level 3)
720-730 Onvoy (Sinch)
720-732 T-Mobile
720-733 Lumen (Qwest)
720-734 Onvoy (Sinch)
720-736 Onvoy (Sinch)
720-737 Verizon Wireless
720-738 Onvoy (Sinch)
720-739 Bandwidth
720-742 T-Mobile
720-744 Lumen (Qwest)
720-746 Lumen (Qwest)
720-747 Lumen (Qwest)
720-748 Lumen (Qwest)
720-749 Peerless Network
720-750 T-Mobile
720-751 T-Mobile
720-752 Lumen (Level 3)
720-754 Lumen (Level 3)
720-755 T-Mobile
720-756 T-Mobile
720-757 T-Mobile
720-758 Lumen (CenturyLink)
720-760 Twilio
720-761 T-Mobile
720-762 Verizon Wireless
720-763 AT&T Mobility
720-765 Verizon Wireless
720-766 Fractel
720-767 T-Mobile
720-768 Commio
720-769 Vonage
720-771 T-Mobile
720-772 Allstream
720-773 Verizon Business (MCImetro)
720-774 AT&T Mobility
720-775 AT&T Mobility
720-777 Lumen (Qwest)
720-778 Bandwidth
720-779 Bandwidth
720-780 Onvoy (Sinch)
720-783 Onvoy (Sinch)
720-785 AT&T (Teleport)
720-786 T-Mobile
720-787 Metropcs
720-788 Verizon Wireless
720-789 Lumen (Level 3)
720-792 Onvoy (Sinch)
720-793 Verizon Wireless
720-795 Lumen (CenturyLink)
720-798 Bandwidth
720-799 Onvoy (Sinch)
720-800 Onvoy (Sinch)
720-803 T-Mobile
720-805 Voip Innovations
720-807 Onvoy (Sinch)
720-808 Bandwidth
720-809 Metropcs
720-810 Verizon Wireless
720-812 Verizon Wireless
720-813 Ip Horizon
720-819 T-Mobile
720-820 Wide Voice
720-822 Verizon Wireless
720-823 Onvoy (Sinch)
720-825 Hd Carrier
720-826 Comcast (Xfinity)
720-827 T-Mobile
720-828 T-Mobile
720-829 Metropcs
720-830 Hd Carrier
720-831 AT&T (Teleport)
720-833 Lumen (Qwest)
720-834 AT&T (Teleport)
720-835 AT&T Mobility
720-836 Lumen (Level 3)
720-837 T-Mobile
720-838 T-Mobile
720-839 T-Mobile
720-840 T-Mobile
720-841 T-Mobile
720-842 Lumen (Qwest)
720-843 Onvoy (Sinch)
720-844 Leap Telecom
720-845 T-Mobile
720-847 Lumen (Qwest)
720-848 Lumen (Qwest)
720-849 T-Mobile
720-850 Five9
720-851 Lumen (Qwest)
720-852 Lumen (Qwest)
720-854 Lumen (Qwest)
720-855 Lumen (Qwest)
720-857 Lumen (Qwest)
720-858 Lumen (Qwest)
720-859 Lumen (Qwest)
720-860 Onvoy (Sinch)
720-862 Verizon Business (MCImetro)
720-863 Verizon Business (MCImetro)
720-865 Lumen (Level 3)
720-866 Terra Nova Telecom
720-867 Great West Services, Ltd.
720-869 AT&T Mobility
720-870 Lumen (Qwest)
720-872 Lumen (Qwest)
720-873 Lumen (Qwest)
720-874 Lumen (Qwest)
720-875 Lumen (Qwest)
720-876 Lumen (Qwest)
720-877 Lumen (Level 3)
720-878 AT&T Mobility
720-879 Lumen (Level 3)
720-880 Verizon Wireless
720-881 Bandwidth
720-882 AT&T Mobility
720-883 Lumen (Level 3)
720-884 Lumen (Qwest)
720-885 AT&T Mobility
720-886 Lumen (Qwest)
720-887 Lumen (Qwest)
720-888 Lumen (Level 3)
720-889 Verizon Business (MCImetro)
720-890 Lumen (Qwest)
720-891 Lumen (Level 3)
720-892 Bandwidth
720-895 Lumen (Qwest)
720-896 T-Mobile
720-897 Lumen (Level 3)
720-898 Lumen (Qwest)
720-900 Peerless Network
720-901 Telnyx
720-902 Verizon Wireless
720-903 Lumen (Level 3)
720-904 Lumen (Qwest)
720-905 Five9
720-907 Lumen (Level 3)
720-908 Verizon Wireless
720-909 Bandwidth
720-910 Verizon Wireless
720-912 Onvoy (Sinch)
720-913 Lumen (Level 3)
720-916 Verizon Wireless
720-917 Lumen (Qwest)
720-919 T-Mobile
720-920 AT&T (Teleport)
720-921 Lumen (Level 3)
720-922 Lumen (Qwest)
720-923 Advanced Telecom Solutions
720-925 Comcast (Xfinity)
720-926 Verizon Wireless
720-929 Lumen (Qwest)
720-930 Verizon Wireless
720-931 Lumen (Qwest)
720-932 Lumen (Qwest)
720-933 T-Mobile
720-934 T-Mobile
720-935 T-Mobile
720-936 T-Mobile
720-937 T-Mobile
720-938 T-Mobile
720-939 T-Mobile
720-940 T-Mobile
720-941 Lumen (Qwest)
720-942 Lumen (Qwest)
720-943 Lumen (Level 3)
720-944 Lumen (Qwest)
720-945 Lumen (Qwest)
720-946 Lumen (Qwest)
720-947 Lumen (Qwest)
720-948 Verizon Wireless
720-949 AT&T (Teleport)
720-951 Verizon Wireless
720-953 T-Mobile
720-955 Verizon Wireless
720-956 Lumen (Qwest)
720-957 T-Mobile
720-960 AT&T Mobility
720-961 Lumen (Level 3)
720-962 Lumen (Qwest)
720-963 Lumen (Qwest)
720-965 T-Mobile
720-967 Leap Telecom
720-968 AT&T Mobility
720-969 AT&T Mobility
720-971 T-Mobile
720-972 Lumen (Qwest)
720-973 Hadlo Technologies
720-974 Allstream
720-975 Allstream
720-977 Lumen (Qwest)
720-978 Nuso
720-979 T-Mobile
720-980 T-Mobile
720-981 Lumen (Qwest)
720-982 T-Mobile
720-983 AT&T Mobility
720-984 T-Mobile
720-985 T-Mobile
720-987 T-Mobile
720-988 T-Mobile
720-989 T-Mobile
720-990 Lumen (Level 3)
720-992 AT&T (Teleport)
720-993 AT&T Mobility
720-994 T-Mobile
720-995 Eon Telecom
720-996 Commio
720-998 Comcast (Xfinity)
720-999 T-Mobile
983-201 AT&T (Teleport)
983-202 Shelcomm
983-203 Onvoy (Sinch)
983-204 Onvoy (Sinch)
983-208 AT&T Mobility
983-210 Bandwidth
983-212 Onvoy (Sinch)
983-214 Onvoy (Sinch)
983-215 AT&T Mobility
983-216 Onvoy (Sinch)
983-217 Verizon Wireless
983-218 Verizon Wireless
983-219 Wavenation
983-220 Telimize
983-224 Tpx Communications
983-225 Onvoy (Sinch)
983-228 AT&T Mobility
983-229 Onvoy (Sinch)
983-231 Verizon Wireless
983-233 Voip Innovations
983-277 Opentact
983-333 Wide Voice
983-444 Wide Voice
983-456 AT&T (Teleport)
983-587 Opentact
983-777 Wide Voice
983-800 Wide Voice
983-880 8X8
983-888 Wide Voice
983-900 Ahoi
983-955 Allo Communications
983-999 Wide Voice

Nearby cities in area code 303

Questions

What is the area code for Federal Heights, CO?: Federal Heights uses 3 area codes: 303, 720 and 983. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Federal Heights in?: Federal Heights is in the Mountain time zone.