720 Area Code: Location, Cities, Map And Time Zone

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Area Code 720

Area code 720 is in Colorado, USA , spanning 14 counties and serving 74 cities , including Denver, Thornton or Arvada; it currently uses 785 prefixes , assigned from 720-200-XXXX through 720-999-XXXX.

In service since June 01, 1998, area code 720 is an overlay Numbering Plan Area, part of overlay complex 303/720/983.

The current local time is .

720 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 720 area code map

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More Colorado area codes:

  • 303
  • 719
  • 748
  • 970
  • 983

Locate any 720-NXX prefix:

720-200-XXXX --- 720-299-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-200 Denver Qwest Corporation N/A
720-201 Denver New Cingular Wireless PCS N/A
720-202 Denver Cellco Partnership 10/7/2009
720-203 Denver T-Mobile USA 1/29/2001
720-204 Longmont Multiple N/A
720-205 Denver T-Mobile USA N/A
720-206 Denver Multiple N/A
720-207 Denver Multiple N/A
720-208 Denver Multiple N/A
720-209 Denver T-Mobile USA N/A
720-210 Denver Multiple N/A
720-212 Denver Multiple N/A
720-213 Denver Multiple N/A
720-214 Denver Paetec Itel N/A
720-215 Denver Multiple 10/12/2009
720-216 Denver Multiple 1/29/2001
720-217 Denver T-Mobile USA N/A
720-218 Denver Multiple N/A
720-219 Denver Cellco Partnership N/A
720-220 Denver T-Mobile USA N/A
720-221 Denver MCIMetro Access Transmission Services N/A
720-222 Denver MCIMetro Access Transmission Services N/A
720-223 Denver Multiple N/A
720-224 Denver Multiple N/A
720-225 Denver Multiple N/A
720-226 Denver Multiple N/A
720-227 Denver Multiple N/A
720-228 Denver MCIMetro Access Transmission Services N/A
720-229 Denver Multiple N/A
720-230 Denver Multiple N/A
720-231 Denver T-Mobile USA N/A
720-232 Denver Multiple N/A
720-233 Denver Multiple N/A
720-234 Denver Multiple N/A
720-235 Denver Multiple N/A
720-236 Denver Multiple N/A
720-237 Denver Multiple 9/28/2009
720-238 Denver Multiple N/A
720-239 Denver Multiple N/A
720-240 Denver Multiple N/A
720-241 Denver Multiple N/A
720-242 Denver Multiple 10/9/2008
720-243 Denver Multiple 6/30/2009
720-244 Denver New Cingular Wireless PCS N/A
720-245 Denver Multiple 11/21/2011
720-246 Denver Multiple N/A
720-247 Denver MCIMetro Access Transmission Services 5/20/2004
720-248 Denver Multiple N/A
720-249 Denver Multiple N/A
720-250 Denver Multiple N/A
720-251 Denver Multiple N/A
720-252 Denver Multiple N/A
720-253 Denver Multiple N/A
720-254 Denver Multiple N/A
720-255 Denver Multiple N/A
720-256 Denver Multiple N/A
720-257 Denver Multiple N/A
720-258 Denver Multiple N/A
720-259 Denver Level 3 Communications N/A
720-260 Denver Multiple N/A
720-261 Denver T-Mobile USA N/A
720-262 Denver Multiple N/A
720-263 Denver Multiple N/A
720-264 Denver Qwest Corporation N/A
720-265 Denver MCIMetro Access Transmission Services 5/3/2004
720-266 Denver Multiple N/A
720-267 Denver Qwest Corporation N/A
720-268 Denver Qwest Corporation N/A
720-269 Denver Multiple N/A
720-270 Denver T-Mobile USA N/A
720-271 Denver Multiple N/A
720-272 Denver New Cingular Wireless PCS 1/18/2001
720-273 Denver New Cingular Wireless PCS 1/18/2001
720-274 Denver Paetec Itel N/A
720-275 Denver New Cingular Wireless PCS 2/22/2001
720-276 Denver New Cingular Wireless PCS 2/22/2001
720-277 Denver Multiple N/A
720-278 Denver Multiple 1/25/2001
720-279 Denver Multiple 1/25/2001
720-280 Denver T-Mobile USA N/A
720-281 Denver Multiple N/A
720-282 Denver Multiple 1/25/2001
720-283 Denver Qwest Corporation N/A
720-284 Denver Multiple N/A
720-285 Denver Multiple 1/30/2009
720-286 Denver Teleport Communications America 4/30/2002
720-287 Denver Multiple 4/30/2010
720-288 Denver Multiple 2/26/2010
720-289 Denver New Cingular Wireless PCS 7/25/2001
720-290 Denver T-Mobile USA N/A
720-291 Denver T-Mobile USA N/A
720-292 Denver Multiple 3/4/2009
720-293 Denver MCIMetro Access Transmission Services N/A
720-294 Denver MCIMetro Access Transmission Services N/A
720-295 Denver Bandwidth.com Clec 3/1/2010
720-296 Denver New Cingular Wireless PCS 1/12/2001
720-297 Denver New Cingular Wireless PCS 1/12/2001
720-298 Denver New Cingular Wireless PCS 1/12/2001
720-299 Denver T-Mobile USA N/A
720-300-XXXX --- 720-399-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-300 Denver T-Mobile USA N/A
720-301 Denver T-Mobile USA N/A
720-302 Denver Multiple N/A
720-303 Denver Multiple 02/13/2024
720-304 Denver Multiple N/A
720-305 Denver Multiple 1/29/2001
720-306 Denver Multiple 1/29/2001
720-307 Allenspark-Lyons Multiple 8/2/2012
720-308 Denver New Cingular Wireless PCS 8/14/2001
720-309 Denver New Cingular Wireless PCS 12/5/2001
720-310 Allenspark-Lyons Multiple N/A
720-312 Denver Multiple 2/20/2001
720-313 Denver Multiple 2/20/2001
720-314 Denver Multiple 2/20/2001
720-315 Denver Multiple 10/14/2009
720-316 Denver Bandwidth.com Clec 5/24/2010
720-317 Denver Multiple N/A
720-318 Denver Multiple N/A
720-319 Denver Multiple 4/19/2001
720-320 Denver New Cingular Wireless PCS N/A
720-321 Denver Qwest Corporation 5/29/2008
720-322 Denver Multiple N/A
720-323 Denver T-Mobile USA N/A
720-324 Denver Multiple N/A
720-325 Denver Multiple 8/6/2010
720-326 Denver Multiple 6/13/2011
720-327 Denver New Cingular Wireless PCS 10/18/2001
720-328 Denver Multiple 10/20/2009
720-329 Denver New Cingular Wireless PCS 10/18/2001
720-330 Denver Multiple N/A
720-331 Denver Multiple N/A
720-332 Denver MCIMetro Access Transmission Services N/A
720-333 Denver Multiple 5/14/2001
720-334 Denver Multiple 5/14/2001
720-335 Denver Multiple 5/14/2001
720-336 Keenesburg Multiple 7/19/2010
720-337 Denver Qwest Corporation 2/18/2009
720-338 Denver New Cingular Wireless PCS 11/19/2001
720-339 Denver Multiple N/A
720-340 Longmont Multiple 9/4/2009
720-341 Denver T-Mobile USA N/A
720-342 Denver Teleport Communications America 4/15/2009
720-343 Denver Multiple 10/31/2003
720-344 Denver Qwest Corporation N/A
720-345 Denver Multiple 12/28/2007
720-346 Denver Multiple N/A
720-347 Denver Multiple 9/28/2009
720-348 Denver Qwest Corporation N/A
720-349 Denver Teleport Communications America 3/28/2011
720-350 Denver Multiple N/A
720-351 Denver Multiple N/A
720-352 Denver T-Mobile USA N/A
720-353 Denver Multiple N/A
720-354 Denver Multiple 6/30/2011
720-355 Denver Multiple 8/16/2012
720-356 Denver Multiple N/A
720-357 Denver Multiple 7/5/2012
720-358 Hudson Multiple 9/9/2009
720-359 Denver Qwest Corporation N/A
720-360 Denver Multiple 1/28/2013
720-361 Denver Multiple 7/3/2013
720-362 Denver Multiple 6/6/2007
720-363 Denver Multiple N/A
720-364 Denver New Cingular Wireless PCS 1/15/2002
720-365 Denver New Cingular Wireless PCS 1/15/2002
720-366 Denver New Cingular Wireless PCS 1/15/2002
720-367 Denver MCIMetro Access Transmission Services N/A
720-368 Denver MCIMetro Access Transmission Services 4/30/2004
720-369 Denver New Cingular Wireless PCS 3/14/2011
720-370 Denver Bandwidth.com Clec 1/4/2013
720-371 Denver Multiple N/A
720-372 Denver Multiple 9/9/2013
720-373 Denver Multiple N/A
720-374 Denver Qwest Corporation N/A
720-375 Denver Multiple 7/10/2007
720-376 Denver Multiple 11/12/2012
720-377 Denver Multiple N/A
720-378 Longmont Multiple 1/19/2010
720-379 Denver Multiple N/A
720-380 Denver Multiple 2/1/2013
720-381 Denver Multiple 8/3/2005
720-382 Denver Multiple N/A
720-383 Fort Lupton Multiple 11/13/2008
720-384 Denver Multiple N/A
720-385 Denver Multiple N/A
720-386 Georgetown Multiple 12/3/2012
720-387 Denver Multiple 9/4/2012
720-388 Denver Multiple 1/11/2010
720-389 Denver Multiple 11/17/2008
720-390 Denver Multiple 7/18/2013
720-391 Denver Multiple 7/12/2013
720-392 Deer Trail Cellco Partnership 1/30/2009
720-393 Denver Multiple 6/7/2010
720-394 Denver T-Mobile USA N/A
720-395 Denver AT&T 9/4/2009
720-396 Denver AT&T 9/8/2009
720-397 Denver Multiple 9/8/2009
720-398 Denver Multiple 6/28/2010
720-399 Denver Multiple 5/6/2011
720-400-XXXX --- 720-499-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-400 Denver Multiple 10/28/2010
720-401 Denver T-Mobile USA 1/13/2009
720-402 Denver Multiple 5/10/2011
720-403 Denver Multiple 7/25/2013
720-404 Denver New Cingular Wireless PCS 10/18/2001
720-405 Denver Intrado Communications 8/30/2013
720-406 Denver Qwest Corporation N/A
720-407 Denver Multiple N/A
720-408 Denver Multiple 11/15/2012
720-409 Denver Multiple 11/22/2011
720-410 Denver Multiple 6/27/2014
720-412 Denver New Cingular Wireless PCS 6/28/2010
720-413 Denver Cellco Partnership 8/27/2008
720-414 Allenspark-Lyons Multiple 10/4/2011
720-415 Denver Cellco Partnership 6/12/2013
720-416 Denver Multiple 6/30/2014
720-417 Denver Multiple 8/18/2014
720-418 Denver Multiple 3/12/2014
720-419 Denver Multiple 3/16/2016
720-420 Denver Multiple 5/26/2010
720-421 Denver T-Mobile USA 3/20/2009
720-422 Denver New Cingular Wireless PCS 9/26/2001
720-423 Denver Qwest Corporation 4/22/2004
720-424 Denver Qwest Corporation 4/22/2004
720-425 Denver Cellco Partnership 1/15/2008
720-426 Denver Qwest Corporation 4/20/2010
720-427 Denver T-Mobile USA 2/4/2002
720-428 Denver Multiple 12/12/2011
720-429 Denver New Cingular Wireless PCS 7/2/2008
720-430 Denver AT&T 6/28/2012
720-431 Denver New Cingular Wireless PCS 9/22/2010
720-432 Denver Bandwidth.com Clec 2/26/2010
720-433 Denver Qwest Corporation N/A
720-434 Denver New Cingular Wireless PCS N/A
720-435 Denver New Cingular Wireless PCS N/A
720-436 Denver New Cingular Wireless PCS N/A
720-437 Denver Multiple 2/8/2011
720-438 Longmont Multiple 9/26/2006
720-439 Denver Multiple 4/21/2010
720-440 Denver Multiple 5/12/2010
720-441 Denver Multiple 5/18/2011
720-442 Longmont Multiple 4/4/2011
720-443 Denver Multiple 10/7/2010
720-444 Denver Qwest Corporation N/A
720-445 Denver Multiple 9/15/2010
720-446 Denver Multiple 2/23/2011
720-447 Denver New Cingular Wireless PCS 2/22/2008
720-448 Denver Multiple 4/9/2008
720-449 Denver Multiple N/A
720-450 Denver Multiple 1/8/2014
720-451 Denver Multiple 10/25/2013
720-452 Denver Peerless Network Of Colorado 12/28/2010
720-453 Longmont Multiple N/A
720-454 Denver Multiple 8/11/2010
720-455 Denver Qwest Corporation 7/2/2010
720-456 Denver Multiple 7/23/2013
720-457 Denver Multiple N/A
720-458 Denver Multiple 9/27/2010
720-459 Denver Multiple 10/15/2010
720-460 Denver Multiple 11/13/2013
720-461 Denver MetroPCS 12/22/2015
720-462 Denver Multiple 11/23/2016
720-463 Deckers Multiple 2/5/2013
720-464 Denver Bandwidth.com Clec 4/21/2011
720-465 Denver Multiple 1/3/2012
720-466 Fort Lupton Multiple 6/28/2010
720-467 Denver Cellco Partnership 1/10/2014
720-468 Denver Multiple 12/17/2001
720-469 Denver Multiple 9/23/2011
720-470 Denver Multiple N/A
720-471 Denver Cellco Partnership 6/12/2014
720-472 Denver Multiple N/A
720-473 Denver Multiple N/A
720-474 Denver Multiple 10/31/2011
720-475 Denver Multiple N/A
720-476 Denver Multiple 5/19/2014
720-477 Denver Multiple 8/9/2011
720-478 Denver Level 3 Telecom Of Colorado 5/8/2013
720-479 Denver Multiple N/A
720-480 Denver New Cingular Wireless PCS N/A
720-481 Denver Multiple 8/15/2014
720-482 Denver Qwest Corporation N/A
720-483 Denver Multiple 8/4/2014
720-484 Denver Multiple 7/18/2011
720-485 Denver Multiple 5/8/2014
720-486 Denver Multiple 8/18/2014
720-487 Longmont Multiple 12/9/2016
720-488 Denver Qwest Corporation N/A
720-489 Denver Qwest Corporation N/A
720-490 Denver Multiple N/A
720-491 Longmont Multiple 11/16/2011
720-492 Denver Multiple 8/25/2014
720-493 Denver Qwest Corporation N/A
720-494 Longmont Qwest Corporation N/A
720-495 Denver New Cingular Wireless PCS 9/28/2001
720-496 Denver Multiple 12/17/2001
720-497 Denver Qwest Corporation N/A
720-498 Denver Cellco Partnership 9/10/2012
720-499 Denver Multiple 8/9/2011
720-500-XXXX --- 720-599-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-500 Denver Multiple 10/7/2014
720-501 Denver Multiple 8/28/2014
720-502 Denver Multiple 11/15/2012
720-503 Denver New Cingular Wireless PCS 10/2/2014
720-504 Denver Multiple 5/24/2013
720-505 Denver Multiple 1/11/2011
720-506 Denver Multiple 12/17/2001
720-507 Denver Bandwidth.com Clec 10/30/2014
720-508 Denver Multiple 6/26/2012
720-509 Denver Multiple 4/2/2010
720-510 Denver Multiple 6/13/2017
720-512 Denver Multiple 5/9/2016
720-513 Denver Onvoy 8/25/2017
720-514 Denver Multiple N/A
720-515 Denver Bandwidth.com Clec 2/11/2010
720-516 Denver Qwest Corporation 7/21/2017
720-517 Denver New Cingular Wireless PCS 6/30/2015
720-518 Denver Multiple 5/16/2014
720-519 Denver Multiple N/A
720-520 Denver Multiple 5/13/2016
720-521 Denver American Messaging Services N/A
720-522 Denver MCIMetro Access Transmission Services 11/19/2010
720-523 Denver Multiple 5/24/2010
720-524 Denver Multiple N/A
720-525 Denver Multiple 4/2/2013
720-526 Longmont Multiple 6/12/2014
720-527 Denver Multiple 10/27/2017
720-528 Denver Qwest Corporation N/A
720-529 Denver Qwest Corporation N/A
720-530 Denver New Cingular Wireless PCS N/A
720-531 Denver Multiple 8/16/2016
720-532 Denver Multiple N/A
720-533 Denver Teleport Communications America N/A
720-534 Longmont Multiple 8/31/2016
720-535 Denver Multiple N/A
720-536 Denver Multiple N/A
720-537 Denver Multiple 10/22/2014
720-538 Fort Lupton Multiple 9/24/2012
720-539 Denver Multiple 7/8/2011
720-540 Denver Qwest Corporation N/A
720-541 Denver Multiple 9/28/2012
720-542 Denver Multiple N/A
720-543 Denver Peerless Network Of Colorado 10/14/2016
720-544 Denver Multiple N/A
720-545 Denver Multiple 6/12/2009
720-546 Denver Multiple 8/23/2016
720-547 Keenesburg Multiple 3/30/2018
720-548 Denver Multiple N/A
720-549 Denver Multiple N/A
720-550 Denver Multiple 6/25/2013
720-551 Denver Multiple 4/1/2011
720-552 Longmont Multiple 11/16/2012
720-553 Denver Qwest Corporation 6/22/2012
720-554 Denver Qwest Corporation N/A
720-556 Denver Cellco Partnership 5/10/2011
720-557 Denver Multiple 6/12/2013
720-558 Denver Qwest Corporation 3/13/2002
720-559 Denver Teleport Communications America N/A
720-560 Denver New Cingular Wireless PCS N/A
720-561 Denver Multiple 4/18/2008
720-562 Denver Qwest Corporation N/A
720-563 Denver Multiple N/A
720-564 Denver Qwest Corporation N/A
720-565 Denver Qwest Corporation N/A
720-566 Denver Qwest Corporation N/A
720-567 Denver Level 3 Communications N/A
720-568 Denver Multiple 2/27/2001
720-569 Denver New Cingular Wireless PCS 10/8/2008
720-570 Denver Multiple N/A
720-571 Allenspark-Lyons Multiple 3/1/2016
720-572 Denver Multiple 12/14/2016
720-573 Denver Multiple 10/17/2014
720-574 Denver Bandwidth.com Clec 6/29/2018
720-575 Denver Onvoy 11/11/2014
720-576 Denver Cellco Partnership 11/9/2016
720-577 Denver Multiple 7/3/2014
720-578 Denver Qwest Corporation N/A
720-579 Denver Multiple N/A
720-580 Keenesburg Multiple 3/15/2013
720-581 Denver Multiple N/A
720-582 Denver Multiple 11/12/2015
720-583 Denver Multiple 9/30/2010
720-584 Denver Cellco Partnership 10/21/2014
720-585 Denver Multiple 11/2/2012
720-586 Denver Multiple 5/25/2017
720-587 Denver Multiple N/A
720-588 Denver Multiple 10/17/2012
720-589 Denver T-Mobile USA 4/30/2013
720-590 Denver Multiple 2/5/2013
720-591 Denver Cellco Partnership 9/15/2016
720-592 Denver Multiple 12/8/2016
720-593 Denver Multiple 4/2/2014
720-594 Denver Multiple 6/30/2017
720-595 Denver Multiple 5/10/2016
720-596 Denver Multiple N/A
720-597 Longmont Multiple 1/11/2016
720-598 Denver Multiple 2/26/2015
720-599 Denver Multiple 2/13/2012
720-600-XXXX --- 720-699-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-600 Longmont Multiple 12/20/2012
720-601 Denver Cellco Partnership 12/21/2017
720-602 Denver Multiple 7/31/2017
720-603 Denver Multiple 9/1/2017
720-604 Strasburg Multiple N/A
720-605 Denver Onvoy 11/17/2015
720-606 Fort Lupton Multiple 8/12/2011
720-607 Denver Cellco Partnership 3/16/2017
720-608 Georgetown Multiple 7/19/2010
720-609 Denver Multiple 6/3/2014
720-610 Denver Cellco Partnership 7/30/2018
720-612 Denver Multiple 7/22/2011
720-613 Hudson Multiple 3/1/2013
720-614 Denver Multiple 10/4/2018
720-615 Keenesburg Multiple 8/17/2020
720-616 Denver Multiple 8/29/2014
720-617 Denver Multiple 4/18/2019
720-618 Denver Cellco Partnership 7/10/2014
720-619 Georgetown Multiple 3/25/2014
720-620 Denver New Cingular Wireless PCS 3/27/2002
720-621 Denver New Cingular Wireless PCS 3/27/2002
720-622 Denver Multiple N/A
720-623 Denver Onvoy 2/17/2012
720-624 Denver Multiple N/A
720-625 Denver Multiple 9/20/2011
720-626 Denver Cellco Partnership 1/11/2011
720-627 Denver Multiple 3/6/2012
720-628 Denver New Cingular Wireless PCS 3/4/2002
720-629 Denver New Cingular Wireless PCS 3/4/2002
720-630 Denver Multiple 10/23/2013
720-631 Denver MCIMetro Access Transmission Services 4/3/2017
720-632 Denver Teleport Communications America 1/11/2018
720-633 Denver Multiple 12/28/2010
720-634 Denver Multiple 11/16/2012
720-635 Denver New Cingular Wireless PCS N/A
720-636 Denver Multiple 11/13/2013
720-637 Denver Onvoy 10/21/2021
720-638 Denver Comcast IP Phone 1/17/2013
720-639 Denver Multiple 5/14/2014
720-640 Hudson Multiple 1/28/2019
720-641 Denver Multiple N/A
720-642 Denver Multiple 10/22/2015
720-643 Denver Multiple 8/24/2015
720-644 Denver Multiple 4/1/2011
720-645 Denver Multiple 3/5/2014
720-646 Denver Multiple 10/7/2015
720-647 Denver Multiple 5/20/2019
720-648 Denver Multiple 5/10/2011
720-649 Georgetown Multiple 8/30/2018
720-650 Denver Multiple 8/17/2017
720-651 Denver Multiple 10/15/2015
720-652 Longmont Qwest Corporation N/A
720-653 Denver Multiple 6/3/2019
720-654 Denver New Cingular Wireless PCS 1/10/2022
720-655 Denver T-Mobile USA 8/30/2021
720-656 Denver Multiple 10/7/2015
720-657 Denver Bandwidth.com Clec 2/25/2019
720-658 Denver Telstar Communications Inc 3/26/2010
720-659 Denver Multiple 7/15/2022
720-660 Denver Cellco Partnership 4/8/2014
720-661 Denver Cellco Partnership 12/24/2018
720-662 Denver Multiple 9/30/2014
720-663 Denver Multiple 5/28/2008
720-664 Allenspark-Lyons Multiple 8/16/2019
720-665 Denver Multiple 8/30/2017
720-666 Denver Multiple 5/23/2012
720-667 Denver Multiple 11/21/2017
720-668 Denver Multiple 10/16/2014
720-669 Hudson Multiple 12/12/2014
720-670 Denver Multiple N/A
720-671 Denver Multiple 4/25/2019
720-672 Denver Multiple 9/30/2019
720-673 Denver Multiple 8/23/2019
720-674 Denver Multiple 2/20/2020
720-675 Denver Multiple 5/12/2009
720-676 Denver Multiple 8/29/2016
720-677 Denver Onvoy 6/20/2019
720-678 Denver Multiple 10/9/2019
720-679 Georgetown Multiple 8/16/2019
720-680 Longmont Multiple 6/4/2020
720-681 Denver Multiple 4/9/2019
720-682 Denver Cellco Partnership 10/22/2018
720-683 Fort Lupton Multiple 5/15/2013
720-684 Longmont Multiple N/A
720-685 Denver Multiple N/A
720-686 Denver Multiple 10/14/2010
720-687 Denver Multiple 11/19/2019
720-688 Denver Multiple 7/15/2015
720-689 Denver Multiple 4/4/2011
720-690 Denver New Cingular Wireless PCS 3/27/2002
720-691 Denver Multiple 6/25/2019
720-692 Denver Multiple 5/27/2015
720-693 Denver Multiple 1/11/2017
720-694 Denver Multiple 3/24/2020
720-695 Denver Multiple 8/12/2014
720-696 Denver Multiple 6/1/2015
720-697 Denver Multiple 11/9/2015
720-698 Longmont Multiple 3/15/2022
720-699 Denver Onvoy 11/11/2014
720-701-XXXX --- 720-799-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-701 Denver Multiple 4/16/2019
720-702 Keenesburg Multiple 3/27/2020
720-703 Denver Multiple 6/19/2020
720-704 Denver Multiple 3/31/2020
720-705 Denver New Cingular Wireless PCS 10/2/2014
720-706 Denver Onvoy 7/13/2020
720-707 Denver Multiple 11/21/2014
720-708 Denver Multiple 8/12/2011
720-709 Denver Multiple 8/21/2014
720-710 Denver Multiple 9/7/2016
720-712 Fort Lupton Multiple 6/20/2019
720-713 Longmont Multiple 8/16/2019
720-714 Longmont Onvoy 8/24/2020
720-715 Deckers Multiple 2/8/2019
720-716 Denver Multiple 3/25/2020
720-717 Denver Multiple 3/3/2015
720-718 Longmont Qwest Corporation 12/19/2016
720-719 Denver Multiple 04/03/2024
720-720 Denver New Cingular Wireless PCS 09/03/2024
720-721 Denver Multiple N/A
720-722 Denver Multiple 5/21/2010
720-723 Denver Multiple 2/4/2013
720-724 Denver Multiple 4/2/2013
720-725 Denver Multiple 6/10/2015
720-726 Denver Multiple 10/29/2013
720-727 Longmont Multiple 6/12/2018
720-728 Denver Multiple 12/16/2015
720-729 Keenesburg Multiple 3/2/2012
720-730 Denver Multiple 9/20/2018
720-731 Longmont Multiple 1/4/2019
720-732 Denver Multiple N/A
720-733 Denver Qwest Corporation N/A
720-734 Denver Multiple 5/11/2020
720-735 Keenesburg Multiple 10/28/2014
720-736 Denver Multiple 1/21/2021
720-737 Denver Cellco Partnership 12/13/2012
720-738 Denver Multiple 4/29/2019
720-739 Denver Multiple 4/29/2014
720-740 Deckers Multiple 8/29/2019
720-741 Georgetown Multiple 8/19/2020
720-742 Denver T-Mobile USA 9/11/2020
720-743 Longmont Multiple 9/21/2020
720-744 Denver Multiple N/A
720-745 Longmont Multiple 4/17/2015
720-746 Denver Multiple N/A
720-747 Denver Qwest Corporation N/A
720-748 Denver Qwest Corporation N/A
720-749 Denver Multiple 9/25/2015
720-750 Denver Multiple 1/28/2019
720-751 Denver Multiple 1/9/2020
720-752 Denver Level 3 Communications 8/17/2020
720-753 Fort Lupton Multiple 12/1/2015
720-754 Denver Level 3 Telecom Of Colorado 3/30/2010
720-755 Denver T-Mobile USA 9/1/2015
720-756 Denver Multiple 11/24/2020
720-757 Denver T-Mobile USA 9/30/2014
720-758 Denver Multiple 12/20/2016
720-759 Longmont Multiple 8/10/2016
720-760 Denver Multiple 10/15/2020
720-761 Denver Multiple 10/5/2020
720-762 Denver Multiple 7/18/2019
720-763 Denver Multiple 11/5/2009
720-764 Hudson Multiple 10/23/2020
720-765 Denver Cellco Partnership 9/29/2017
720-766 Denver Multiple 1/25/2019
720-767 Denver Multiple 7/14/2014
720-768 Denver Multiple 11/14/2017
720-769 Denver Multiple 9/3/2020
720-770 Deckers Multiple 9/30/2014
720-771 Denver T-Mobile USA N/A
720-772 Denver Multiple 10/15/2014
720-773 Denver Multiple 2/9/2015
720-774 Denver Multiple 6/4/2015
720-775 Denver Multiple 10/14/2009
720-776 Deckers Multiple 2/14/2019
720-777 Denver Qwest Corporation 2/9/2006
720-778 Denver Multiple 9/30/2014
720-779 Denver Multiple 6/12/2019
720-780 Denver Onvoy 12/16/2019
720-781 Longmont T-Mobile USA 11/24/2020
720-782 Hudson Multiple 7/2/2019
720-783 Denver Onvoy 8/5/2022
720-784 Georgetown Multiple 12/31/2020
720-785 Denver Multiple N/A
720-786 Denver Multiple 8/12/2022
720-787 Denver Multiple 8/23/2016
720-788 Denver Cellco Partnership 1/6/2017
720-789 Denver Multiple 8/5/2011
720-790 Allenspark-Lyons Multiple 8/18/2020
720-791 Georgetown Multiple 3/16/2017
720-792 Denver Onvoy 11/9/2020
720-793 Denver Cellco Partnership 11/13/2018
720-794 Allenspark-Lyons Multiple 1/15/2021
720-795 Denver Multiple 6/21/2017
720-796 Georgetown Multiple 12/11/2020
720-797 Keenesburg Multiple 5/22/2019
720-798 Denver Multiple 4/21/2020
720-799 Denver Multiple 3/13/2015
720-800-XXXX --- 720-899-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-800 Denver Multiple 11/8/2012
720-801 Georgetown Multiple 9/26/2022
720-802 Fort Lupton Multiple 8/19/2020
720-803 Denver Multiple 1/14/2021
720-804 Longmont Multiple 3/5/2021
720-805 Denver Multiple 8/15/2018
720-806 Deckers Multiple 2/24/2021
720-807 Denver Onvoy 8/27/2020
720-808 Denver Multiple 10/20/2010
720-809 Denver Multiple 8/22/2014
720-810 Denver Multiple N/A
720-812 Denver Multiple 3/24/2020
720-813 Denver Multiple 3/5/2021
720-814 Deer Trail Multiple 9/7/2021
720-815 Longmont Multiple 9/1/2017
720-816 Allenspark-Lyons Multiple 03/29/2023
720-817 Strasburg Multiple 9/24/2021
720-818 Longmont Multiple 9/1/2017
720-819 Denver Multiple 3/9/2018
720-820 Denver Multiple 9/28/2015
720-821 Longmont Onvoy 1/6/2021
720-822 Denver Cellco Partnership 5/12/2014
720-823 Denver Whitesky Communications 1/8/2021
720-824 Hudson Multiple 10/20/2021
720-825 Denver Multiple 9/23/2022
720-826 Denver Multiple 7/30/2019
720-827 Denver Multiple 3/22/2018
720-828 Denver Multiple 11/12/2018
720-829 Denver Multiple 7/29/2014
720-830 Denver Multiple 12/3/2018
720-831 Denver Multiple 10/25/2021
720-832 Hudson Multiple 03/29/2023
720-833 Denver Multiple N/A
720-834 Denver Teleport Communications America N/A
720-835 Denver Multiple 9/25/2015
720-836 Denver Multiple N/A
720-837 Denver Multiple N/A
720-838 Denver Multiple N/A
720-839 Denver Multiple N/A
720-840 Denver Multiple N/A
720-841 Denver Multiple N/A
720-842 Denver Multiple N/A
720-843 Denver Multiple 10/21/2021
720-844 Denver Multiple 1/25/2021
720-845 Denver Multiple 8/30/2017
720-846 Deer Trail Multiple 6/22/2022
720-847 Denver Qwest Corporation 11/5/2003
720-848 Denver Qwest Corporation N/A
720-849 Denver Multiple N/A
720-850 Denver Multiple 5/27/2021
720-851 Denver Qwest Corporation N/A
720-852 Denver Qwest Corporation N/A
720-853 Longmont Multiple 10/25/2021
720-854 Denver Multiple N/A
720-855 Denver Multiple N/A
720-856 Fort Lupton Multiple 10/25/2021
720-857 Denver Qwest Corporation N/A
720-858 Denver Qwest Corporation N/A
720-859 Denver Qwest Corporation N/A
720-860 Denver Onvoy Spectrum 8/12/2022
720-861 Georgetown Multiple 10/26/2021
720-862 Denver Multiple N/A
720-863 Denver Multiple N/A
720-864 Longmont Multiple N/A
720-865 Denver Level 3 Communications N/A
720-866 Denver Multiple 2/22/2019
720-868 Fort Lupton Multiple 4/1/2021
720-869 Denver Multiple 10/25/2021
720-870 Denver Qwest Corporation N/A
720-871 Longmont Multiple 11/18/2021
720-872 Denver Qwest Corporation N/A
720-873 Denver Qwest Corporation N/A
720-874 Denver Qwest Corporation N/A
720-875 Denver Qwest Corporation N/A
720-876 Denver Multiple N/A
720-877 Denver Multiple N/A
720-878 Denver Multiple N/A
720-879 Denver Multiple N/A
720-880 Denver Multiple N/A
720-881 Denver Bandwidth.com Clec N/A
720-882 Denver Multiple N/A
720-883 Denver Multiple N/A
720-884 Denver Multiple N/A
720-885 Denver Multiple 2/4/2010
720-886 Denver Qwest Corporation N/A
720-887 Denver Qwest Corporation N/A
720-888 Denver Level 3 Communications N/A
720-889 Denver MCIMetro Access Transmission Services N/A
720-890 Denver Qwest Corporation N/A
720-891 Denver Multiple 12/17/2001
720-892 Denver Multiple 3/20/2018
720-893 Allenspark-Lyons Multiple 8/8/2014
720-894 Deckers Multiple 10/25/2021
720-895 Denver Qwest Corporation N/A
720-896 Denver Multiple 11/12/2021
720-897 Denver Multiple N/A
720-898 Denver Qwest Corporation N/A
720-899 Longmont Multiple 11/10/2014
720-900-XXXX --- 720-999-XXXX
NPANXX Area served[1] Provider[2] Date[3]
720-900 Denver Multiple 10/7/2014
720-901 Denver Multiple 11/17/2021
720-902 Denver Multiple 5/1/2019
720-903 Denver Multiple N/A
720-904 Denver Qwest Corporation N/A
720-905 Denver Multiple 1/26/2022
720-906 Byers Comcast IP Phone 12/3/2021
720-907 Denver Multiple N/A
720-908 Denver Multiple 5/15/2017
720-909 Denver Multiple N/A
720-910 Denver Cellco Partnership 3/25/2022
720-912 Denver Onvoy 10/5/2020
720-913 Denver Level 3 Communications N/A
720-914 Fort Lupton Multiple 01/16/2024
720-915 Allenspark-Lyons Multiple 6/24/2022
720-916 Denver Cellco Partnership 7/6/2022
720-917 Denver Multiple N/A
720-918 Keenesburg Multiple 6/24/2022
720-919 Denver T-Mobile USA 8/23/2016
720-920 Denver Multiple N/A
720-921 Denver Multiple N/A
720-922 Denver Qwest Corporation N/A
720-923 Denver Multiple 8/22/2018
720-924 Deckers Multiple N/A
720-925 Denver Multiple 12/18/2015
720-926 Denver Cellco Partnership 6/14/2018
720-927 Longmont Multiple 3/27/2019
720-928 Fort Lupton Multiple 5/15/2018
720-929 Denver Qwest Corporation N/A
720-930 Denver Multiple 8/27/2015
720-931 Denver Qwest Corporation N/A
720-932 Denver Qwest Corporation N/A
720-933 Denver T-Mobile USA N/A
720-934 Denver T-Mobile USA N/A
720-935 Denver T-Mobile USA N/A
720-936 Denver T-Mobile USA N/A
720-937 Denver T-Mobile USA N/A
720-938 Denver T-Mobile USA N/A
720-939 Denver T-Mobile USA N/A
720-940 Denver Multiple N/A
720-941 Denver Qwest Corporation N/A
720-942 Denver Qwest Corporation N/A
720-943 Denver Multiple N/A
720-944 Denver Qwest Corporation N/A
720-945 Denver Multiple N/A
720-946 Denver Qwest Corporation N/A
720-947 Denver Multiple N/A
720-948 Denver Cellco Partnership 6/22/2022
720-949 Denver Multiple N/A
720-951 Denver Multiple N/A
720-952 Deckers Multiple 6/24/2022
720-953 Denver Multiple 7/21/2022
720-954 Fort Lupton Multiple 9/16/2022
720-955 Denver Cellco Partnership 7/9/2015
720-956 Denver Qwest Corporation N/A
720-957 Denver Multiple 1/27/2022
720-960 Denver New Cingular Wireless PCS 8/17/2022
720-961 Denver Multiple N/A
720-962 Denver Qwest Corporation N/A
720-963 Denver Qwest Corporation N/A
720-964 Longmont Multiple 9/20/2022
720-965 Denver Multiple 6/7/2013
720-966 Fort Lupton Multiple 10/2/2014
720-967 Denver Multiple 9/21/2022
720-968 Denver Multiple 8/17/2022
720-969 Denver New Cingular Wireless PCS 10/18/2022
720-970 Longmont Multiple 04/03/2024
720-971 Denver Multiple N/A
720-972 Denver Qwest Corporation 4/23/2002
720-973 Denver Multiple 03/06/2023
720-974 Denver Multiple N/A
720-975 Denver Multiple N/A
720-977 Denver Qwest Corporation N/A
720-978 Denver Multiple 11/15/2022
720-979 Denver Multiple N/A
720-980 Denver Multiple N/A
720-981 Denver Qwest Corporation N/A
720-982 Denver Multiple N/A
720-983 Denver Multiple 05/25/2023
720-984 Denver Multiple N/A
720-985 Denver Multiple N/A
720-986 Longmont Multiple 10/18/2022
720-987 Denver Multiple N/A
720-988 Denver Multiple N/A
720-989 Denver Multiple N/A
720-990 Denver Multiple 7/21/2015
720-991 Deckers Multiple 10/5/2022
720-992 Denver Teleport Communications America 1/11/2018
720-993 Denver Multiple 10/18/2022
720-994 Denver Multiple 11/23/2022
720-995 Denver Multiple 12/28/2022
720-996 Denver Multiple 3/15/2017
720-997 Bennett Multiple 3/25/2022
720-998 Denver Multiple 12/1/2006
720-999 Denver Multiple 7/22/2008
  1. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  2. A single provider refers to the original company controlling a whole NPA-NXX block (10,000 phone numbers). With Number Pooling, NPA-NXX blocks can be split into ten 1,000 phone number blocks and handed over to other service providers (available in the USA and Puerto Rico).
  3. Assignment date. N/A: unavailable date or central office code assigned before 2001.
  4. NXX prefixes last updated: February 13, 2026

Cities in area code 720

City1 County Time zone1
Allenspark Boulder M
Arvada Jefferson M
Aurora Adams M
Bailey Park M
Bennett Adams M
Black Hawk Gilpin M
Bond Eagle M
Boulder Boulder M
Brighton Adams M
Broomfield Broomfield M
Buffalo Creek Jefferson M
Byers Arapahoe M
Castle Rock Douglas M
Central City Gilpin M
Commerce City Adams M
Conifer Jefferson M
Dacono Weld M
Deer Trail Arapahoe M
Denver Adams M
Dumont Clear Creek M
Dupont Adams M
Eastlake Adams M
Elbert El Paso M
Eldorado Springs Boulder M
Elizabeth Elbert M
Empire Clear Creek M
Englewood Arapahoe M
Erie Weld M
Evergreen Jefferson M
Firestone Weld M
Fort Lupton Weld M
Franktown Douglas M
Frederick Weld M
Georgetown Clear Creek M
Golden Jefferson M
Grant Park M
Henderson Adams M
Hereford Weld M
Highlands Ranch Douglas M
Hudson Weld M
Hygiene Boulder M
Idaho Springs Clear Creek M
Idledale Jefferson M
Indian Hills Jefferson M
Jamestown Boulder M
Keenesburg Weld M
Kiowa Elbert M
Kittredge Jefferson M
Lafayette Boulder M
Lakewood Jefferson M
Larkspur Douglas M
Littleton Arapahoe M
Longmont Boulder M
Louisville Boulder M
Louviers Douglas M
Lyons Boulder M
Morrison Jefferson M
Nederland Boulder M
Niwot Boulder M
Parker Douglas M
Pine Jefferson M
Pinecliffe Boulder M
Roggen Weld M
Rollinsville Gilpin M
Sedalia Douglas M
Sedgwick Sedgwick M
Shawnee Park M
Silver Plume Clear Creek M
Strasburg Adams M
Thornton Adams M
Ward Boulder M
Watkins Adams M
Westminster Adams M
Wheat Ridge Jefferson M
  1. Listed above are most places served by USA area code 720. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. M stands for Mountain Time (currently ).
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