State
Major City
Denver
Time Zone
Mountain (UTC-7)
Current Local Time
—
Cities Served
18
Cities Served by Area Code 303 (18 cities)
Additional Details
Established
1947
Type
Original (1947)
Active Prefixes
800
Wireless Lines
25%
About Area Code 303
Area code 303 is one of the original 86 area codes established in 1947 when AT&T and the Bell System created the North American Numbering Plan. It has served the Denver area for over 75 years. This area code shares its territory with overlay codes 720 and 983, meaning callers must dial all 10 digits for local calls. The area is in the Mountain time zone. It covers 18 cities and communities including Arvada, Aurora, Boulder, Brighton, Broomfield and 13 more.
Phone Number Prefixes in Area Code 303
800 active NXX prefixes — 25% wireless, 75% landline. Each prefix (NXX) represents up to 10,000 phone numbers.
CenturyLink 449 (56%)Verizon Wireless 60 (8%)Lumen/Level 3 60 (8%)T-Mobile 39 (5%)AT&T Mobility 35 (4%)
| Prefix | Carrier | Type | Rate Center |
|---|---|---|---|
| 303-200 | Teleport Communications America | Landline | Denver |
| 303-201 | Usa Mobility Wireless | Wireless | Denver |
| 303-202 | CenturyLink | Landline | Denver |
| 303-203 | American Messaging Services | Landline | Denver |
| 303-204 | Verizon Wireless | Wireless | Denver |
| 303-205 | CenturyLink | Landline | Denver |
| 303-206 | Usa Mobility Wireless | Wireless | Denver |
| 303-207 | Usa Mobility Wireless | Wireless | Denver |
| 303-208 | Usa Mobility Wireless | Wireless | Denver |
| 303-209 | MCI/Verizon | Wireless | Denver |
| 303-210 | T-Mobile | Wireless | Denver |
| 303-211 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-212 | American Messaging Services | Landline | Denver |
| 303-213 | Usa Mobility Wireless | Wireless | Denver |
| 303-214 | MCI/Verizon | Wireless | Denver |
| 303-215 | CenturyLink | Landline | Denver |
| 303-216 | CenturyLink | Landline | Denver |
| 303-217 | MCI/Verizon | Wireless | Denver |
| 303-218 | MCI/Verizon | Wireless | Denver |
| 303-219 | MCI/Verizon | Wireless | Denver |
| 303-220 | CenturyLink | Landline | Denver |
| 303-221 | CenturyLink | Landline | Denver |
| 303-222 | MCI/Verizon | Wireless | Denver |
| 303-223 | Lumen/Level 3 | Landline | Denver |
| 303-224 | CenturyLink | Landline | Denver |
| 303-225 | Lumen/Level 3 | Landline | Denver |
| 303-226 | Lumen/Level 3 | Landline | Denver |
| 303-227 | CenturyLink | Landline | Denver |
| 303-228 | Lumen/Level 3 | Landline | Denver |
| 303-229 | Verizon Wireless | Wireless | Denver |
| 303-230 | Usa Mobility Wireless | Wireless | Denver |
| 303-231 | CenturyLink | Landline | Denver |
| 303-232 | CenturyLink | Landline | Denver |
| 303-233 | CenturyLink | Landline | Denver |
| 303-234 | CenturyLink | Landline | Denver |
| 303-235 | CenturyLink | Landline | Denver |
| 303-236 | CenturyLink | Landline | Denver |
| 303-237 | CenturyLink | Landline | Denver |
| 303-238 | CenturyLink | Landline | Denver |
| 303-239 | CenturyLink | Landline | Denver |
| 303-240 | Usa Mobility Wireless | Wireless | Denver |
| 303-241 | Verizon Wireless | Wireless | Denver |
| 303-242 | MCI/Verizon | Wireless | Denver |
| 303-243 | N.E. Colorado Cellular | Wireless | Denver |
| 303-244 | CenturyLink | Landline | Denver |
| 303-245 | CenturyLink | Landline | Denver |
| 303-246 | T-Mobile | Wireless | Denver |
| 303-247 | CenturyLink | Landline | Denver |
| 303-248 | Teleport Communications America | Landline | Denver |
| 303-249 | AT&T Mobility | Wireless | Denver |
| 303-250 | AT&T Mobility | Wireless | Denver |
| 303-251 | Usa Mobility Wireless | Wireless | Denver |
| 303-252 | CenturyLink | Landline | Denver |
| 303-253 | Teleport Communications America | Landline | Denver |
| 303-254 | CenturyLink | Landline | Denver |
| 303-255 | CenturyLink | Landline | Denver |
| 303-256 | Teleport Communications America | Landline | Denver |
| 303-257 | T-Mobile | Wireless | Denver |
| 303-258 | CenturyLink | Landline | Denver |
| 303-259 | American Messaging Services | Landline | Denver |
| 303-260 | CenturyLink | Landline | Denver |
| 303-261 | CenturyLink | Landline | Denver |
| 303-262 | Teleport Communications America | Landline | Denver |
| 303-263 | Verizon Wireless | Wireless | Denver |
| 303-264 | Teleport Communications America | Landline | Denver |
| 303-265 | CenturyLink | Landline | Denver |
| 303-266 | Usa Mobility Wireless | Wireless | Denver |
| 303-267 | CenturyLink | Landline | Denver |
| 303-268 | Lumen/Level 3 | Landline | Denver |
| 303-269 | CenturyLink | Landline | Denver |
| 303-270 | CenturyLink | Landline | Denver |
| 303-271 | CenturyLink | Landline | Denver |
| 303-272 | CenturyLink | Landline | Denver |
| 303-273 | CenturyLink | Landline | Denver |
| 303-274 | CenturyLink | Landline | Denver |
| 303-275 | CenturyLink | Landline | Denver |
| 303-276 | Onvoy | Landline | Denver |
| 303-277 | CenturyLink | Landline | Denver |
| 303-278 | CenturyLink | Landline | Denver |
| 303-279 | CenturyLink | Landline | Denver |
| 303-280 | CenturyLink | Landline | Denver |
| 303-281 | CenturyLink | Landline | Denver |
| 303-282 | CenturyLink | Landline | Denver |
| 303-283 | CenturyLink | Landline | Denver |
| 303-284 | Comcast | Landline | Denver |
| 303-285 | Lumen/Level 3 | Landline | Denver |
| 303-286 | CenturyLink | Landline | Denver |
| 303-287 | CenturyLink | Landline | Denver |
| 303-288 | CenturyLink | Landline | Denver |
| 303-289 | CenturyLink | Landline | Denver |
| 303-290 | CenturyLink | Landline | Denver |
| 303-291 | CenturyLink | Landline | Denver |
| 303-292 | CenturyLink | Landline | Denver |
| 303-293 | CenturyLink | Landline | Denver |
| 303-294 | CenturyLink | Landline | Denver |
| 303-295 | CenturyLink | Landline | Denver |
| 303-296 | CenturyLink | Landline | Denver |
| 303-297 | CenturyLink | Landline | Denver |
| 303-298 | CenturyLink | Landline | Denver |
| 303-299 | CenturyLink | Landline | Denver |
| 303-300 | CenturyLink | Landline | Denver |
| 303-301 | Lumen/Level 3 | Landline | Denver |
| 303-302 | MCI/Verizon | Wireless | Denver |
| 303-303 | Hd Carrier | Landline | Denver |
| 303-304 | AT&T Mobility | Wireless | Fortlupton |
| 303-305 | MCI/Verizon | Wireless | Denver |
| 303-306 | CenturyLink | Landline | Denver |
| 303-307 | CenturyLink | Landline | Denver |
| 303-308 | CenturyLink | Landline | Denver |
| 303-309 | Lumen/Level 3 | Landline | Denver |
| 303-310 | American Messaging Services | Landline | Denver |
| 303-311 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-312 | CenturyLink | Landline | Denver |
| 303-313 | CenturyLink | Landline | Denver |
| 303-314 | CenturyLink | Landline | Denver |
| 303-315 | CenturyLink | Landline | Denver |
| 303-316 | CenturyLink | Landline | Denver |
| 303-317 | CenturyLink | Landline | Denver |
| 303-318 | CenturyLink | Landline | Denver |
| 303-319 | Elbert County Wireless | Wireless | Denver |
| 303-320 | CenturyLink | Landline | Denver |
| 303-321 | CenturyLink | Landline | Denver |
| 303-322 | CenturyLink | Landline | Denver |
| 303-323 | MCI/Verizon | Wireless | Denver |
| 303-324 | AT&T Mobility | Wireless | Denver |
| 303-325 | Lumen/Level 3 | Landline | Denver |
| 303-326 | CenturyLink | Landline | Denver |
| 303-327 | Lumen/Level 3 | Landline | Denver |
| 303-328 | MCI/Verizon | Wireless | Denver |
| 303-329 | CenturyLink | Landline | Denver |
| 303-330 | Onvoy | Landline | Denver |
| 303-331 | CenturyLink | Landline | Denver |
| 303-332 | T-Mobile | Wireless | Denver |
| 303-333 | CenturyLink | Landline | Denver |
| 303-334 | MCI/Verizon | Wireless | Denver |
| 303-335 | Verizon Wireless | Wireless | Denver |
| 303-336 | CenturyLink | Landline | Denver |
| 303-337 | CenturyLink | Landline | Denver |
| 303-338 | CenturyLink | Landline | Denver |
| 303-339 | Onvoy | Landline | Denver |
| 303-340 | CenturyLink | Landline | Denver |
| 303-341 | CenturyLink | Landline | Denver |
| 303-342 | CenturyLink | Landline | Denver |
| 303-343 | CenturyLink | Landline | Denver |
| 303-344 | CenturyLink | Landline | Denver |
| 303-345 | Lumen/Level 3 | Landline | Denver |
| 303-346 | CenturyLink | Landline | Denver |
| 303-347 | CenturyLink | Landline | Denver |
| 303-348 | CenturyLink | Landline | Denver |
| 303-349 | Verizon Wireless | Wireless | Denver |
| 303-350 | AT&T Mobility | Wireless | Denver |
| 303-351 | Onvoy | Landline | Deckers |
| 303-352 | CenturyLink | Landline | Denver |
| 303-353 | Comcast | Landline | Denver |
| 303-354 | Teleport Communications America | Landline | Denver |
| 303-355 | CenturyLink | Landline | Denver |
| 303-356 | T-Mobile | Wireless | Denver |
| 303-357 | MCI/Verizon | Wireless | Denver |
| 303-358 | Verizon Wireless | Wireless | Denver |
| 303-359 | T-Mobile | Wireless | Denver |
| 303-360 | CenturyLink | Landline | Denver |
| 303-361 | CenturyLink | Landline | Denver |
| 303-362 | Teleport Communications America | Landline | Denver |
| 303-363 | CenturyLink | Landline | Denver |
| 303-364 | CenturyLink | Landline | Denver |
| 303-365 | CenturyLink | Landline | Denver |
| 303-366 | CenturyLink | Landline | Denver |
| 303-367 | CenturyLink | Landline | Denver |
| 303-368 | CenturyLink | Landline | Denver |
| 303-369 | CenturyLink | Landline | Denver |
| 303-370 | CenturyLink | Landline | Denver |
| 303-371 | CenturyLink | Landline | Denver |
| 303-372 | CenturyLink | Landline | Denver |
| 303-373 | CenturyLink | Landline | Denver |
| 303-374 | Teleport Communications America | Landline | Denver |
| 303-375 | CenturyLink | Landline | Denver |
| 303-376 | Lumen/Level 3 | Landline | Denver |
| 303-377 | CenturyLink | Landline | Denver |
| 303-378 | AT&T Mobility | Wireless | Denver |
| 303-379 | Teleport Communications America | Landline | Denver |
| 303-380 | CenturyLink | Landline | Denver |
| 303-381 | Lumen/Level 3 | Landline | Denver |
| 303-382 | CenturyLink | Landline | Denver |
| 303-383 | CenturyLink | Landline | Denver |
| 303-384 | CenturyLink | Landline | Denver |
| 303-385 | Lumen/Level 3 | Landline | Denver |
| 303-386 | Lumen/Level 3 | Landline | Denver |
| 303-387 | CenturyLink | Landline | Denver |
| 303-388 | CenturyLink | Landline | Denver |
| 303-389 | CenturyLink | Landline | Denver |
| 303-390 | MCI/Verizon | Wireless | Denver |
| 303-391 | CenturyLink | Landline | Denver |
| 303-392 | Verizon Wireless | Wireless | Denver |
| 303-393 | CenturyLink | Landline | Denver |
| 303-394 | CenturyLink | Landline | Denver |
| 303-395 | Lumen/Level 3 | Landline | Denver |
| 303-396 | Live Wire Networks | Landline | Denver |
| 303-397 | CenturyLink | Landline | Denver |
| 303-398 | CenturyLink | Landline | Denver |
| 303-399 | CenturyLink | Landline | Denver |
| 303-400 | CenturyLink | Landline | Denver |
| 303-401 | CenturyLink | Landline | Denver |
| 303-402 | CenturyLink | Landline | Denver |
| 303-403 | CenturyLink | Landline | Denver |
| 303-404 | CenturyLink | Landline | Denver |
| 303-405 | CenturyLink | Landline | Denver |
| 303-406 | Lumen/Level 3 | Landline | Denver |
| 303-407 | Onvoy | Landline | Denver |
| 303-408 | AT&T Mobility | Wireless | Denver |
| 303-409 | Lumen/Level 3 | Landline | Denver |
| 303-410 | CenturyLink | Landline | Denver |
| 303-411 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-412 | CenturyLink | Landline | Denver |
| 303-413 | CenturyLink | Landline | Denver |
| 303-414 | Lumen/Level 3 | Landline | Denver |
| 303-415 | CenturyLink | Landline | Denver |
| 303-416 | Lumen/Level 3 | Landline | Denver |
| 303-417 | CenturyLink | Landline | Denver |
| 303-418 | Lumen/Level 3 | Landline | Denver |
| 303-419 | T-Mobile | Wireless | Denver |
| 303-420 | CenturyLink | Landline | Denver |
| 303-421 | CenturyLink | Landline | Denver |
| 303-422 | CenturyLink | Landline | Denver |
| 303-423 | CenturyLink | Landline | Denver |
| 303-424 | CenturyLink | Landline | Denver |
| 303-425 | CenturyLink | Landline | Denver |
| 303-426 | CenturyLink | Landline | Denver |
| 303-427 | CenturyLink | Landline | Denver |
| 303-428 | CenturyLink | Landline | Denver |
| 303-429 | CenturyLink | Landline | Denver |
| 303-430 | CenturyLink | Landline | Denver |
| 303-431 | CenturyLink | Landline | Denver |
| 303-432 | CenturyLink | Landline | Denver |
| 303-433 | CenturyLink | Landline | Denver |
| 303-434 | T-Mobile | Wireless | Denver |
| 303-435 | T-Mobile | Wireless | Denver |
| 303-436 | CenturyLink | Landline | Denver |
| 303-437 | T-Mobile | Wireless | Denver |
| 303-438 | CenturyLink | Landline | Denver |
| 303-439 | CenturyLink | Landline | Denver |
| 303-440 | CenturyLink | Landline | Denver |
| 303-441 | CenturyLink | Landline | Denver |
| 303-442 | CenturyLink | Landline | Denver |
| 303-443 | CenturyLink | Landline | Denver |
| 303-444 | CenturyLink | Landline | Denver |
| 303-445 | CenturyLink | Landline | Denver |
| 303-446 | CenturyLink | Landline | Denver |
| 303-447 | CenturyLink | Landline | Denver |
| 303-448 | CenturyLink | Landline | Denver |
| 303-449 | CenturyLink | Landline | Denver |
| 303-450 | CenturyLink | Landline | Denver |
| 303-451 | CenturyLink | Landline | Denver |
| 303-452 | CenturyLink | Landline | Denver |
| 303-453 | CenturyLink | Landline | Denver |
| 303-454 | CenturyLink | Landline | Denver |
| 303-455 | CenturyLink | Landline | Denver |
| 303-456 | CenturyLink | Landline | Denver |
| 303-457 | CenturyLink | Landline | Denver |
| 303-458 | CenturyLink | Landline | Denver |
| 303-459 | CenturyLink | Landline | Denver |
| 303-460 | CenturyLink | Landline | Denver |
| 303-461 | Usa Mobility Wireless | Wireless | Denver |
| 303-462 | CenturyLink | Landline | Denver |
| 303-463 | CenturyLink | Landline | Denver |
| 303-464 | CenturyLink | Landline | Denver |
| 303-465 | CenturyLink | Landline | Denver |
| 303-466 | CenturyLink | Landline | Denver |
| 303-467 | CenturyLink | Landline | Denver |
| 303-468 | Onvoy | Landline | Denver |
| 303-469 | CenturyLink | Landline | Denver |
| 303-470 | CenturyLink | Landline | Denver |
| 303-471 | CenturyLink | Landline | Denver |
| 303-472 | T-Mobile | Wireless | Denver |
| 303-473 | CenturyLink | Landline | Denver |
| 303-474 | Teleport Communications America | Landline | Denver |
| 303-475 | AT&T Mobility | Wireless | Denver |
| 303-476 | MCI/Verizon | Wireless | Denver |
| 303-477 | CenturyLink | Landline | Denver |
| 303-478 | AT&T Mobility | Wireless | Denver |
| 303-479 | Teleport Communications America | Landline | Denver |
| 303-480 | CenturyLink | Landline | Denver |
| 303-481 | MCI/Verizon | Wireless | Denver |
| 303-482 | Lumen/Level 3 | Landline | Denver |
| 303-483 | Lumen/Level 3 | Landline | Denver |
| 303-484 | Teleport Communications America | Landline | Denver |
| 303-485 | CenturyLink | Landline | Longmont |
| 303-486 | CenturyLink | Landline | Denver |
| 303-487 | CenturyLink | Landline | Denver |
| 303-488 | CenturyLink | Landline | Denver |
| 303-489 | Verizon Wireless | Wireless | Denver |
| 303-490 | Usa Mobility Wireless | Wireless | Denver |
| 303-491 | Spectrum | Landline | Denver |
| 303-492 | CenturyLink | Landline | Denver |
| 303-493 | Lumen/Level 3 | Landline | Denver |
| 303-494 | CenturyLink | Landline | Denver |
| 303-495 | MCI/Verizon | Wireless | Denver |
| 303-496 | MCI/Verizon | Wireless | Denver |
| 303-497 | CenturyLink | Landline | Denver |
| 303-498 | Comcast | Landline | Denver |
| 303-499 | CenturyLink | Landline | Denver |
| 303-500 | Lumen/Level 3 | Landline | Hudson |
| 303-501 | Verizon Wireless | Wireless | Denver |
| 303-502 | Verizon Wireless | Wireless | Fortlupton |
| 303-503 | Verizon Wireless | Wireless | Denver |
| 303-504 | CenturyLink | Landline | Denver |
| 303-505 | T-Mobile | Wireless | Denver |
| 303-506 | AT&T Mobility | Wireless | Fortlupton |
| 303-507 | T-Mobile | Wireless | Denver |
| 303-508 | American Messaging Services | Landline | Denver |
| 303-509 | American Messaging Services | Landline | Denver |
| 303-510 | American Messaging Services | Landline | Denver |
| 303-511 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-512 | CenturyLink | Landline | Denver |
| 303-513 | AT&T Mobility | Wireless | Denver |
| 303-514 | Verizon Wireless | Wireless | Denver |
| 303-515 | Onvoy | Landline | Denver |
| 303-516 | CenturyLink | Landline | Denver |
| 303-517 | AT&T Mobility | Wireless | Denver |
| 303-518 | Verizon Wireless | Wireless | Denver |
| 303-519 | Verizon Wireless | Wireless | Denver |
| 303-520 | T-Mobile | Wireless | Denver |
| 303-521 | T-Mobile | Wireless | Denver |
| 303-522 | T-Mobile | Wireless | Denver |
| 303-523 | T-Mobile | Wireless | Denver |
| 303-524 | Teleport Communications America | Landline | Denver |
| 303-525 | T-Mobile | Wireless | Denver |
| 303-526 | CenturyLink | Landline | Denver |
| 303-527 | CenturyLink | Landline | Denver |
| 303-528 | American Messaging Services | Landline | Denver |
| 303-529 | Onvoy | Landline | Denver |
| 303-530 | CenturyLink | Landline | Denver |
| 303-531 | MCI/Verizon | Wireless | Denver |
| 303-532 | Paetec Itel | Landline | Longmont |
| 303-533 | CenturyLink | Landline | Denver |
| 303-534 | CenturyLink | Landline | Denver |
| 303-535 | Onvoy | Landline | Fortlupton |
| 303-536 | CenturyLink | Landline | Hudson |
| 303-537 | Teleport Communications America | Landline | Denver |
| 303-538 | CenturyLink | Landline | Denver |
| 303-539 | MCI/Verizon | Wireless | Denver |
| 303-540 | Usa Mobility Wireless | Wireless | Denver |
| 303-541 | CenturyLink | Landline | Denver |
| 303-542 | MCI/Verizon | Wireless | Denver |
| 303-543 | CenturyLink | Landline | Denver |
| 303-544 | CenturyLink | Landline | Denver |
| 303-545 | CenturyLink | Landline | Denver |
| 303-546 | CenturyLink | Landline | Denver |
| 303-547 | Lumen/Level 3 | Landline | Denver |
| 303-548 | Verizon Wireless | Wireless | Denver |
| 303-549 | Verizon Wireless | Wireless | Denver |
| 303-550 | Verizon Wireless | Wireless | Denver |
| 303-551 | MCI/Verizon | Wireless | Denver |
| 303-552 | Lumen/Level 3 | Landline | Denver |
| 303-553 | Usa Mobility Wireless | Wireless | Denver |
| 303-554 | CenturyLink | Landline | Denver |
| 303-555 | Multiple Ocn Listing | Landline | Dir Asst |
| 303-556 | CenturyLink | Landline | Denver |
| 303-557 | Lumen/Level 3 | Landline | Denver |
| 303-558 | Lumen/Level 3 | Landline | Denver |
| 303-559 | American Messaging Services | Landline | Denver |
| 303-560 | Usa Mobility Wireless | Wireless | Denver |
| 303-561 | CenturyLink | Landline | Denver |
| 303-562 | Lumen/Level 3 | Landline | Denver |
| 303-563 | Lumen/Level 3 | Landline | Denver |
| 303-564 | T-Mobile | Wireless | Denver |
| 303-565 | Onvoy | Landline | Denver |
| 303-566 | MCI/Verizon | Wireless | Denver |
| 303-567 | CenturyLink | Landline | Denver |
| 303-568 | Teleport Communications America | Landline | Denver |
| 303-569 | CenturyLink | Landline | Georgetown |
| 303-570 | AT&T Mobility | Wireless | Denver |
| 303-571 | CenturyLink | Landline | Denver |
| 303-572 | CenturyLink | Landline | Denver |
| 303-573 | CenturyLink | Landline | Denver |
| 303-574 | CenturyLink | Landline | Denver |
| 303-575 | CenturyLink | Landline | Denver |
| 303-576 | CenturyLink | Landline | Denver |
| 303-577 | Electric Lightwave | Landline | Denver |
| 303-578 | Lumen/Level 3 | Landline | Keenesburg |
| 303-579 | Verizon Wireless | Wireless | Denver |
| 303-580 | American Messaging Services | Landline | Denver |
| 303-581 | CenturyLink | Landline | Denver |
| 303-582 | CenturyLink | Landline | Denver |
| 303-583 | Teleport Communications America | Landline | Denver |
| 303-584 | CenturyLink | Landline | Denver |
| 303-585 | CenturyLink | Landline | Denver |
| 303-586 | Lumen/Level 3 | Landline | Denver |
| 303-587 | T-Mobile | Wireless | Denver |
| 303-588 | AT&T Mobility | Wireless | Denver |
| 303-589 | AT&T Mobility | Wireless | Denver |
| 303-590 | Lumen/Level 3 | Landline | Denver |
| 303-591 | T-Mobile | Wireless | Denver |
| 303-592 | CenturyLink | Landline | Denver |
| 303-593 | Teleport Communications America | Landline | Denver |
| 303-594 | Verizon Wireless | Wireless | Denver |
| 303-595 | CenturyLink | Landline | Denver |
| 303-596 | T-Mobile | Wireless | Denver |
| 303-597 | Electric Lightwave | Landline | Denver |
| 303-598 | T-Mobile | Wireless | Denver |
| 303-599 | Usa Mobility Wireless | Wireless | Denver |
| 303-600 | Teleport Communications America | Landline | Denver |
| 303-601 | AT&T Mobility | Wireless | Denver |
| 303-602 | CenturyLink | Landline | Denver |
| 303-603 | CenturyLink | Landline | Denver |
| 303-604 | CenturyLink | Landline | Denver |
| 303-605 | CenturyLink | Landline | Denver |
| 303-606 | CenturyLink | Landline | Denver |
| 303-607 | CenturyLink | Landline | Denver |
| 303-608 | CenturyLink | Landline | Denver |
| 303-609 | Usa Mobility Wireless | Wireless | Denver |
| 303-610 | Usa Mobility Wireless | Wireless | Denver |
| 303-611 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-612 | Usa Mobility Wireless | Wireless | Denver |
| 303-613 | Usa Mobility Wireless | Wireless | Denver |
| 303-614 | CenturyLink | Landline | Denver |
| 303-615 | CenturyLink | Landline | Denver |
| 303-616 | Spectrum | Landline | Keenesburg |
| 303-617 | CenturyLink | Landline | Denver |
| 303-618 | AT&T Mobility | Wireless | Denver |
| 303-619 | AT&T Mobility | Wireless | Denver |
| 303-620 | CenturyLink | Landline | Denver |
| 303-621 | CenturyLink | Landline | Denver |
| 303-622 | Strasburg Tel. Co | Landline | Strasburg |
| 303-623 | CenturyLink | Landline | Denver |
| 303-624 | CenturyLink | Landline | Denver |
| 303-625 | Lumen/Level 3 | Landline | Denver |
| 303-626 | CenturyLink | Landline | Denver |
| 303-627 | CenturyLink | Landline | Denver |
| 303-628 | CenturyLink | Landline | Denver |
| 303-629 | CenturyLink | Landline | Denver |
| 303-630 | CenturyLink | Landline | Denver |
| 303-631 | CenturyLink | Landline | Denver |
| 303-632 | Teleport Communications America | Landline | Denver |
| 303-633 | CenturyLink | Landline | Denver |
| 303-634 | CenturyLink | Landline | Denver |
| 303-635 | CenturyLink | Landline | Denver |
| 303-636 | CenturyLink | Landline | Denver |
| 303-637 | CenturyLink | Landline | Denver |
| 303-638 | AT&T Mobility | Wireless | Denver |
| 303-639 | CenturyLink | Landline | Denver |
| 303-640 | CenturyLink | Landline | Denver |
| 303-641 | T-Mobile | Wireless | Denver |
| 303-642 | CenturyLink | Landline | Denver |
| 303-643 | CenturyLink | Landline | Denver |
| 303-644 | Eastern Slope Rural Tel. Assn | Landline | Bennett |
| 303-645 | CenturyLink | Landline | Denver |
| 303-646 | CenturyLink | Landline | Denver |
| 303-647 | CenturyLink | Landline | Deckers |
| 303-648 | CenturyLink | Landline | Denver |
| 303-649 | CenturyLink | Landline | Denver |
| 303-650 | CenturyLink | Landline | Denver |
| 303-651 | CenturyLink | Landline | Longmont |
| 303-652 | CenturyLink | Landline | Longmont |
| 303-653 | Lumen/Level 3 | Landline | Denver |
| 303-654 | CenturyLink | Landline | Denver |
| 303-655 | CenturyLink | Landline | Denver |
| 303-656 | Verizon Wireless | Wireless | Denver |
| 303-657 | CenturyLink | Landline | Denver |
| 303-658 | CenturyLink | Landline | Denver |
| 303-659 | CenturyLink | Landline | Denver |
| 303-660 | CenturyLink | Landline | Denver |
| 303-661 | CenturyLink | Landline | Denver |
| 303-662 | CenturyLink | Landline | Denver |
| 303-663 | CenturyLink | Landline | Denver |
| 303-664 | CenturyLink | Landline | Denver |
| 303-665 | CenturyLink | Landline | Denver |
| 303-666 | CenturyLink | Landline | Denver |
| 303-667 | T-Mobile | Wireless | Denver |
| 303-668 | T-Mobile | Wireless | Denver |
| 303-669 | T-Mobile | Wireless | Denver |
| 303-670 | CenturyLink | Landline | Denver |
| 303-671 | CenturyLink | Landline | Denver |
| 303-672 | CenturyLink | Landline | Denver |
| 303-673 | CenturyLink | Landline | Denver |
| 303-674 | CenturyLink | Landline | Denver |
| 303-675 | CenturyLink | Landline | Denver |
| 303-676 | CenturyLink | Landline | Denver |
| 303-677 | CenturyLink | Landline | Denver |
| 303-678 | CenturyLink | Landline | Longmont |
| 303-679 | CenturyLink | Landline | Denver |
| 303-680 | CenturyLink | Landline | Denver |
| 303-681 | CenturyLink | Landline | Denver |
| 303-682 | CenturyLink | Landline | Longmont |
| 303-683 | CenturyLink | Landline | Denver |
| 303-684 | CenturyLink | Landline | Longmont |
| 303-685 | CenturyLink | Landline | Denver |
| 303-686 | Usa Mobility Wireless | Wireless | Denver |
| 303-687 | Usa Mobility Wireless | Wireless | Denver |
| 303-688 | CenturyLink | Landline | Denver |
| 303-689 | CenturyLink | Landline | Denver |
| 303-690 | CenturyLink | Landline | Denver |
| 303-691 | CenturyLink | Landline | Denver |
| 303-692 | CenturyLink | Landline | Denver |
| 303-693 | CenturyLink | Landline | Denver |
| 303-694 | CenturyLink | Landline | Denver |
| 303-695 | CenturyLink | Landline | Denver |
| 303-696 | CenturyLink | Landline | Denver |
| 303-697 | CenturyLink | Landline | Denver |
| 303-698 | CenturyLink | Landline | Denver |
| 303-699 | CenturyLink | Landline | Denver |
| 303-700 | Landline | ||
| 303-701 | Communications Unlimited | Landline | Denver |
| 303-702 | CenturyLink | Landline | Longmont |
| 303-703 | CenturyLink | Landline | Denver |
| 303-704 | MCI/Verizon | Wireless | Denver |
| 303-705 | CenturyLink | Landline | Denver |
| 303-706 | CenturyLink | Landline | Denver |
| 303-707 | CenturyLink | Landline | Denver |
| 303-708 | CenturyLink | Landline | Denver |
| 303-709 | Verizon Wireless | Wireless | Longmont |
| 303-710 | Verizon Wireless | Wireless | Fortlupton |
| 303-711 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-712 | CenturyLink | Landline | Denver |
| 303-713 | CenturyLink | Landline | Denver |
| 303-714 | CenturyLink | Landline | Denver |
| 303-715 | CenturyLink | Landline | Denver |
| 303-716 | CenturyLink | Landline | Denver |
| 303-717 | AT&T Mobility | Wireless | Fortlupton |
| 303-718 | Verizon Wireless | Wireless | Fortlupton |
| 303-719 | Lumen/Level 3 | Landline | Deer Trail |
| 303-720 | Verizon Wireless | Wireless | Fortlupton |
| 303-721 | CenturyLink | Landline | Denver |
| 303-722 | CenturyLink | Landline | Denver |
| 303-723 | Teleport Communications America | Landline | Denver |
| 303-724 | CenturyLink | Landline | Denver |
| 303-725 | T-Mobile | Wireless | Denver |
| 303-726 | Verizon Wireless | Wireless | Denver |
| 303-727 | CenturyLink | Landline | Denver |
| 303-728 | Teleport Communications America | Landline | Denver |
| 303-729 | MCI/Verizon | Wireless | Denver |
| 303-730 | CenturyLink | Landline | Denver |
| 303-731 | Lumen/Level 3 | Landline | Denver |
| 303-732 | CenturyLink | Landline | Keenesburg |
| 303-733 | CenturyLink | Landline | Denver |
| 303-734 | CenturyLink | Landline | Denver |
| 303-735 | CenturyLink | Landline | Denver |
| 303-736 | Teleport Communications America | Landline | Denver |
| 303-737 | CenturyLink | Landline | Denver |
| 303-738 | CenturyLink | Landline | Denver |
| 303-739 | CenturyLink | Landline | Denver |
| 303-740 | CenturyLink | Landline | Denver |
| 303-741 | CenturyLink | Landline | Denver |
| 303-742 | CenturyLink | Landline | Denver |
| 303-743 | CenturyLink | Landline | Denver |
| 303-744 | CenturyLink | Landline | Denver |
| 303-745 | CenturyLink | Landline | Denver |
| 303-746 | Verizon Wireless | Wireless | Longmont |
| 303-747 | CenturyLink | Landline | Allnspklyn |
| 303-748 | AT&T Mobility | Wireless | Denver |
| 303-749 | Teleport Communications America | Landline | Denver |
| 303-750 | CenturyLink | Landline | Denver |
| 303-751 | CenturyLink | Landline | Denver |
| 303-752 | CenturyLink | Landline | Denver |
| 303-753 | CenturyLink | Landline | Denver |
| 303-754 | CenturyLink | Landline | Denver |
| 303-755 | CenturyLink | Landline | Denver |
| 303-756 | CenturyLink | Landline | Denver |
| 303-757 | CenturyLink | Landline | Denver |
| 303-758 | CenturyLink | Landline | Denver |
| 303-759 | CenturyLink | Landline | Denver |
| 303-760 | Usa Mobility Wireless | Wireless | Denver |
| 303-761 | CenturyLink | Landline | Denver |
| 303-762 | CenturyLink | Landline | Denver |
| 303-763 | CenturyLink | Landline | Denver |
| 303-764 | CenturyLink | Landline | Denver |
| 303-765 | CenturyLink | Landline | Denver |
| 303-766 | CenturyLink | Landline | Denver |
| 303-767 | American Messaging Services | Landline | Denver |
| 303-768 | CenturyLink | Landline | Denver |
| 303-769 | Bijou Tel. Coop. Assn | Landline | Deer Trail |
| 303-770 | CenturyLink | Landline | Denver |
| 303-771 | CenturyLink | Landline | Denver |
| 303-772 | CenturyLink | Landline | Longmont |
| 303-773 | CenturyLink | Landline | Denver |
| 303-774 | CenturyLink | Landline | Longmont |
| 303-775 | Verizon Wireless | Wireless | Longmont |
| 303-776 | CenturyLink | Landline | Longmont |
| 303-777 | CenturyLink | Landline | Denver |
| 303-778 | CenturyLink | Landline | Denver |
| 303-779 | CenturyLink | Landline | Denver |
| 303-780 | CenturyLink | Landline | Denver |
| 303-781 | CenturyLink | Landline | Denver |
| 303-782 | CenturyLink | Landline | Denver |
| 303-783 | CenturyLink | Landline | Denver |
| 303-784 | CenturyLink | Landline | Denver |
| 303-785 | MCI/Verizon | Wireless | Denver |
| 303-786 | CenturyLink | Landline | Denver |
| 303-787 | CenturyLink | Landline | Denver |
| 303-788 | CenturyLink | Landline | Denver |
| 303-789 | CenturyLink | Landline | Denver |
| 303-790 | CenturyLink | Landline | Denver |
| 303-791 | CenturyLink | Landline | Denver |
| 303-792 | CenturyLink | Landline | Denver |
| 303-793 | CenturyLink | Landline | Denver |
| 303-794 | CenturyLink | Landline | Denver |
| 303-795 | CenturyLink | Landline | Denver |
| 303-796 | CenturyLink | Landline | Denver |
| 303-797 | CenturyLink | Landline | Denver |
| 303-798 | CenturyLink | Landline | Denver |
| 303-799 | CenturyLink | Landline | Denver |
| 303-800 | Lumen/Level 3 | Landline | Denver |
| 303-801 | MCI/Verizon | Wireless | Denver |
| 303-802 | Lumen/Level 3 | Landline | Denver |
| 303-803 | Lumen/Level 3 | Landline | Denver |
| 303-804 | CenturyLink | Landline | Denver |
| 303-805 | CenturyLink | Landline | Denver |
| 303-806 | CenturyLink | Landline | Denver |
| 303-807 | AT&T Mobility | Wireless | Denver |
| 303-808 | AT&T Mobility | Wireless | Denver |
| 303-809 | AT&T Mobility | Wireless | Denver |
| 303-810 | AT&T Mobility | Wireless | Denver |
| 303-811 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-812 | CenturyLink | Landline | Denver |
| 303-813 | CenturyLink | Landline | Denver |
| 303-814 | CenturyLink | Landline | Denver |
| 303-815 | Interlink Adv Svc | Landline | Denver |
| 303-816 | CenturyLink | Landline | Deckers |
| 303-817 | Verizon Wireless | Wireless | Denver |
| 303-818 | Verizon Wireless | Wireless | Denver |
| 303-819 | Verizon Wireless | Wireless | Denver |
| 303-820 | CenturyLink | Landline | Denver |
| 303-821 | Usa Mobility Wireless | Wireless | Denver |
| 303-822 | Bijou Tel. Coop. Assn | Landline | Byers |
| 303-823 | CenturyLink | Landline | Allnspklyn |
| 303-824 | Teleport Communications America | Landline | Denver |
| 303-825 | CenturyLink | Landline | Denver |
| 303-826 | Usa Mobility Wireless | Wireless | Denver |
| 303-827 | Lumen/Level 3 | Landline | Longmont |
| 303-828 | CenturyLink | Landline | Denver |
| 303-829 | Verizon Wireless | Wireless | Denver |
| 303-830 | CenturyLink | Landline | Denver |
| 303-831 | CenturyLink | Landline | Denver |
| 303-832 | CenturyLink | Landline | Denver |
| 303-833 | CenturyLink | Landline | Denver |
| 303-834 | Verizon Wireless | Wireless | Longmont |
| 303-835 | Lumen/Level 3 | Landline | Denver |
| 303-836 | Communications Unlimited | Landline | Denver |
| 303-837 | CenturyLink | Landline | Denver |
| 303-838 | CenturyLink | Landline | Deckers |
| 303-839 | CenturyLink | Landline | Denver |
| 303-840 | CenturyLink | Landline | Denver |
| 303-841 | CenturyLink | Landline | Denver |
| 303-842 | Verizon Wireless | Wireless | Denver |
| 303-843 | CenturyLink | Landline | Denver |
| 303-844 | CenturyLink | Landline | Denver |
| 303-845 | Teleport Communications America | Landline | Longmont |
| 303-846 | CenturyLink | Landline | Denver |
| 303-847 | Lumen/Level 3 | Landline | Denver |
| 303-848 | Lumen/Level 3 | Landline | Longmont |
| 303-849 | Roggen Tel. Coop. Co | Landline | Roggen |
| 303-850 | CenturyLink | Landline | Denver |
| 303-851 | Usa Mobility Wireless | Wireless | Denver |
| 303-852 | Usa Mobility Wireless | Wireless | Denver |
| 303-853 | CenturyLink | Landline | Denver |
| 303-854 | Lumen/Level 3 | Landline | Denver |
| 303-855 | Usa Mobility Wireless | Wireless | Denver |
| 303-856 | Lumen/Level 3 | Landline | Denver |
| 303-857 | CenturyLink | Landline | Fortlupton |
| 303-858 | CenturyLink | Landline | Denver |
| 303-859 | Verizon Wireless | Wireless | Denver |
| 303-860 | CenturyLink | Landline | Denver |
| 303-861 | CenturyLink | Landline | Denver |
| 303-862 | Comcast | Landline | Denver |
| 303-863 | CenturyLink | Landline | Denver |
| 303-864 | CenturyLink | Landline | Denver |
| 303-865 | Lumen/Level 3 | Landline | Denver |
| 303-866 | CenturyLink | Landline | Denver |
| 303-867 | Iloka | Landline | Denver |
| 303-868 | Verizon Wireless | Wireless | Denver |
| 303-869 | CenturyLink | Landline | Denver |
| 303-870 | Verizon Wireless | Wireless | Denver |
| 303-871 | CenturyLink | Landline | Denver |
| 303-872 | Lumen/Level 3 | Landline | Denver |
| 303-873 | CenturyLink | Landline | Denver |
| 303-874 | Lumen/Level 3 | Landline | Denver |
| 303-875 | T-Mobile | Wireless | Denver |
| 303-876 | MCI/Verizon | Wireless | Denver |
| 303-877 | Verizon Wireless | Wireless | Denver |
| 303-878 | Usa Mobility Wireless | Wireless | Denver |
| 303-879 | Onvoy | Landline | Denver |
| 303-880 | Verizon Wireless | Wireless | Denver |
| 303-881 | AT&T Mobility | Wireless | Denver |
| 303-882 | AT&T Mobility | Wireless | Denver |
| 303-883 | AT&T Mobility | Wireless | Denver |
| 303-884 | AT&T Mobility | Wireless | Denver |
| 303-885 | AT&T Mobility | Wireless | Denver |
| 303-886 | AT&T Mobility | Wireless | Denver |
| 303-887 | AT&T Mobility | Wireless | Denver |
| 303-888 | AT&T Mobility | Wireless | Denver |
| 303-889 | CenturyLink | Landline | Denver |
| 303-890 | Usa Mobility Wireless | Wireless | Denver |
| 303-891 | Usa Mobility Wireless | Wireless | Denver |
| 303-892 | CenturyLink | Landline | Denver |
| 303-893 | CenturyLink | Landline | Denver |
| 303-894 | CenturyLink | Landline | Denver |
| 303-895 | Verizon Wireless | Wireless | Denver |
| 303-896 | CenturyLink | Landline | Denver |
| 303-897 | Usa Mobility Wireless | Wireless | Denver |
| 303-898 | AT&T Mobility | Wireless | Denver |
| 303-899 | CenturyLink | Landline | Denver |
| 303-900 | Lumen/Level 3 | Landline | Georgetown |
| 303-901 | T-Mobile | Wireless | Denver |
| 303-902 | Verizon Wireless | Wireless | Denver |
| 303-903 | Verizon Wireless | Wireless | Denver |
| 303-904 | CenturyLink | Landline | Denver |
| 303-905 | Verizon Wireless | Wireless | Denver |
| 303-906 | Verizon Wireless | Wireless | Denver |
| 303-907 | Verizon Wireless | Wireless | Denver |
| 303-908 | Verizon Wireless | Wireless | Denver |
| 303-909 | Verizon Wireless | Wireless | Denver |
| 303-910 | Verizon Wireless | Wireless | Denver |
| 303-911 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 303-912 | Verizon Wireless | Wireless | Denver |
| 303-913 | Verizon Wireless | Wireless | Denver |
| 303-914 | CenturyLink | Landline | Denver |
| 303-915 | Verizon Wireless | Wireless | Denver |
| 303-916 | Verizon Wireless | Wireless | Denver |
| 303-917 | Verizon Wireless | Wireless | Denver |
| 303-918 | Verizon Wireless | Wireless | Denver |
| 303-919 | Verizon Wireless | Wireless | Denver |
| 303-920 | CenturyLink | Landline | Denver |
| 303-921 | Verizon Wireless | Wireless | Denver |
| 303-922 | CenturyLink | Landline | Denver |
| 303-923 | Lumen/Level 3 | Landline | Denver |
| 303-924 | CenturyLink | Landline | Denver |
| 303-925 | CenturyLink | Landline | Denver |
| 303-926 | CenturyLink | Landline | Denver |
| 303-927 | Teleport Communications America | Landline | Denver |
| 303-928 | MCI/Verizon | Wireless | Denver |
| 303-929 | Verizon Wireless | Wireless | Denver |
| 303-930 | CenturyLink | Landline | Denver |
| 303-931 | T-Mobile | Wireless | Denver |
| 303-932 | CenturyLink | Landline | Denver |
| 303-933 | CenturyLink | Landline | Denver |
| 303-934 | CenturyLink | Landline | Denver |
| 303-935 | CenturyLink | Landline | Denver |
| 303-936 | CenturyLink | Landline | Denver |
| 303-937 | CenturyLink | Landline | Denver |
| 303-938 | CenturyLink | Landline | Denver |
| 303-939 | CenturyLink | Landline | Denver |
| 303-940 | CenturyLink | Landline | Denver |
| 303-941 | Verizon Wireless | Wireless | Denver |
| 303-942 | Teleport Communications America | Landline | Denver |
| 303-943 | Skye Telecom | Landline | Denver |
| 303-944 | T-Mobile | Wireless | Denver |
| 303-945 | Comcast | Landline | Denver |
| 303-946 | T-Mobile | Wireless | Denver |
| 303-947 | Verizon Wireless | Wireless | Denver |
| 303-948 | CenturyLink | Landline | Denver |
| 303-949 | T-Mobile | Wireless | Denver |
| 303-950 | Landline | ||
| 303-951 | Lumen/Level 3 | Landline | Denver |
| 303-952 | Lumen/Level 3 | Landline | Denver |
| 303-953 | Lumen/Level 3 | Landline | Denver |
| 303-954 | Lumen/Level 3 | Landline | Denver |
| 303-955 | Lumen/Level 3 | Landline | Denver |
| 303-956 | AT&T Mobility | Wireless | Fortlupton |
| 303-957 | Lumen/Level 3 | Landline | Denver |
| 303-958 | Landline | ||
| 303-959 | Landline | ||
| 303-960 | T-Mobile | Wireless | Denver |
| 303-961 | T-Mobile | Wireless | Denver |
| 303-962 | Onvoy | Landline | Denver |
| 303-963 | Lumen/Level 3 | Landline | Denver |
| 303-964 | CenturyLink | Landline | Denver |
| 303-965 | CenturyLink | Landline | Denver |
| 303-966 | CenturyLink | Landline | Denver |
| 303-967 | CenturyLink | Landline | Denver |
| 303-968 | MCI/Verizon | Wireless | Denver |
| 303-969 | CenturyLink | Landline | Denver |
| 303-970 | Onvoy | Landline | Deckers |
| 303-971 | CenturyLink | Landline | Denver |
| 303-972 | CenturyLink | Landline | Denver |
| 303-973 | CenturyLink | Landline | Denver |
| 303-974 | Lumen/Level 3 | Landline | Denver |
| 303-975 | CenturyLink | Landline | Denver |
| 303-976 | Landline | ||
| 303-977 | CenturyLink | Landline | Denver |
| 303-978 | CenturyLink | Landline | Denver |
| 303-979 | CenturyLink | Landline | Denver |
| 303-980 | CenturyLink | Landline | Denver |
| 303-981 | Verizon Wireless | Wireless | Denver |
| 303-982 | CenturyLink | Landline | Denver |
| 303-983 | Landline | ||
| 303-984 | CenturyLink | Landline | Denver |
| 303-985 | CenturyLink | Landline | Denver |
| 303-986 | CenturyLink | Landline | Denver |
| 303-987 | CenturyLink | Landline | Denver |
| 303-988 | CenturyLink | Landline | Denver |
| 303-989 | CenturyLink | Landline | Denver |
| 303-990 | T-Mobile | Wireless | Fortlupton |
| 303-991 | MCI/Verizon | Wireless | Denver |
| 303-992 | CenturyLink | Landline | Denver |
| 303-993 | Onvoy | Landline | Denver |
| 303-994 | T-Mobile | Wireless | Denver |
| 303-995 | T-Mobile | Wireless | Denver |
| 303-996 | Electric Lightwave | Landline | Denver |
| 303-997 | Comcast | Landline | Denver |
| 303-998 | CenturyLink | Landline | Denver |
| 303-999 | Comcast | Landline | Denver |
All 5 area codes in Colorado
About Area Code 303
Back in 1947, when the phone system was getting a major overhaul after World War II, area code 303 got its start as one of the original codes. That's right, it was there from the beginning, covering what was then a sprawling part of Colorado that included Denver and its growing suburbs. Fast forward to today, and 303 still serves a bunch of cities like Arvada, Aurora, and Boulder, connecting about 18 communities in total. Imagine picking up the phone and hearing that familiar ring from the Mile High City, where the Rocky Mountains loom in the background and folks are always on the go. This code overlays with 720 and 983 now, which means more numbers for the area's booming population, but 303 keeps its charm as the original. It's all about that mix of urban energy in Denver and the quieter vibes in places like Englewood or Broomfield. You'll find everything from tech hubs to outdoor adventures here, and it's no surprise that calls from 303 often carry a hint of that Colorado spirit—friendly, straightforward, and ready for whatever comes next. Whether you're chatting with a neighbor in Centennial or coordinating a hike in Boulder, this code has been linking lives for over 75 years, evolving right alongside the state it calls home.
⚠ Scam & Spam Alert for 303
If you're in the 303 area, you might get calls that seem off, like someone claiming to be from the IRS demanding payment right away or pushing you to buy a new auto warranty that you never signed up for. Utility scams are another headache around here, with fraudsters pretending to be from your electric company and threatening to cut off service unless you pay up fast. Then there's Medicare fraud, where scammers offer fake services or ask for your personal details under the guise of helping with benefits. These tricks can hit anyone, so it's smart to stay alert. Remember, legitimate organizations won't ask for sensitive info over the phone. A simple tip: Always hang up and call back using a number you trust, like the one on your official statements, to verify before you respond.
Local Snapshot
Denver's metro area packs in over 2.9 million people, making it a real hub in the Rockies. That population keeps growing, drawn by the mix of city life and nearby mountains. The economy here runs on key industries like aerospace, tech, and outdoor gear, with companies like Lockheed Martin and REI calling Colorado home. It's no wonder jobs in these fields are everywhere. The state is famous for its craft breweries, with Denver alone haveing hundreds of spots to grab a local beer after a ski trip. And here's a kicker: Colorado has more microbreweries per capita than anywhere else in the U.S. Oh, and if you're into sports, the Broncos and Nuggets keep things exciting year-round.
Frequently Asked Questions
Where is area code 303?
Area code 303 serves Denver and surrounding communities in Colorado, including Arvada, Aurora, Boulder, Brighton, Broomfield and 13 more. It is in the Mountain time zone.
What cities are in area code 303?
Area code 303 covers 18 cities in Colorado: Arvada, Aurora, Boulder, Brighton, Broomfield, Centennial, Denver, Englewood, Erie, Golden, and 8 more
What time zone is 303?
Area code 303 is in the Mountain time zone (UTC-7).
When was area code 303 created?
Area code 303 is one of the original area codes established in 1947 as part of the North American Numbering Plan.
Is 303 a legitimate area code?
Yes, 303 is a valid, active area code assigned to Denver, Colorado. However, scammers can spoof any area code, so receiving a call from 303 doesn't guarantee the caller is actually in this area.
What area codes overlap with 303?
Area code 303 shares its geographic area with overlay codes 720 and 983. This means all local calls in the area require 10-digit dialing.
Has area code 303 ever been split?
Area code 303, established in 1947, was overlaid with 720 in 1994 due to population growth in the Denver area. This change helped manage the increasing number of phone lines in cities like Denver and Aurora. Further overlays such as 983 were added later to handle continued expansion.
What major outdoor activities are linked to the cities in area code 303?
Cities like Boulder and Denver in area code 303 offer easy access to the Rocky Mountains for hiking and skiing. This region's proximity to trails and parks makes it a hub for outdoor enthusiasts year-round. Local events often tie into these activities, influencing community gatherings.
How does the Mountain Time Zone impact daily life in area code 303 cities?
The Mountain Time Zone (UTC-7) in area code 303 means residents in Denver and surrounding areas adjust schedules for daylight saving time, affecting work and school routines. This timezone creates a one-hour difference from Pacific Time, which influences business interactions with western states. It also aligns with seasonal changes that impact local festivals and events.