All assignees
800 prefixes in 720 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 720-400 | DENVER | 6529 | 2010-10-28 | Yes |
| 720-401 | DENVER | 6529 | 2009-01-13 | Yes |
| 720-402 | DENVER | 3467 | 2011-05-10 | Yes |
| 720-403 | DENVER | 278F | 2013-07-25 | Yes |
| 720-404 | DENVER | 6010 | 2001-10-18 | — |
| 720-405 | DENVER | 809C | 2013-08-30 | Yes |
| 720-406 | DENVER | 9636 | — | — |
| 720-407 | DENVER | 026D | — | Yes |
| 720-408 | DENVER | 078F | 2012-11-15 | Yes |
| 720-409 | DENVER | 829J | 2011-11-22 | Yes |
| 720-410 | DENVER | 318J | 2014-06-27 | Yes |
| 720-411 | XXXXXXXXXX | MULT | — | — |
| 720-412 | DENVER | 6010 | 2010-06-28 | Yes |
| 720-413 | DENVER | 6567 | 2008-08-27 | Yes |
| 720-414 | ALLNSPKLYN | 6118 | 2011-10-04 | Yes |
| 720-415 | DENVER | 6567 | 2013-06-12 | Yes |
| 720-416 | DENVER | 5562 | 2014-06-30 | Yes |
| 720-417 | DENVER | 3467 | 2014-08-18 | Yes |
| 720-418 | DENVER | 7229 | 2014-03-12 | Yes |
| 720-419 | DENVER | 6529 | 2016-03-16 | Yes |
| 720-420 | DENVER | 6118 | 2010-05-26 | Yes |
| 720-421 | DENVER | 6529 | 2009-03-20 | Yes |
| 720-422 | DENVER | 6010 | 2001-09-26 | — |
| 720-423 | DENVER | 9636 | 2004-04-22 | Yes |
| 720-424 | DENVER | 9636 | 2004-04-22 | Yes |
| 720-425 | DENVER | 6567 | 2008-01-15 | Yes |
| 720-426 | DENVER | 9636 | 2010-04-20 | Yes |
| 720-427 | DENVER | 6529 | 2002-02-04 | — |
| 720-428 | DENVER | 026D | 2011-12-12 | Yes |
| 720-429 | DENVER | 6010 | 2008-07-02 | Yes |
| 720-430 | DENVER | 7421 | 2012-06-28 | Yes |
| 720-431 | DENVER | 6010 | 2010-09-22 | Yes |
| 720-432 | DENVER | 078F | 2010-02-26 | Yes |
| 720-433 | DENVER | 9636 | — | Yes |
| 720-434 | DENVER | 6010 | — | — |
| 720-435 | DENVER | 6010 | — | — |
| 720-436 | DENVER | 6010 | — | — |
| 720-437 | DENVER | 6567 | 2011-02-08 | Yes |
| 720-438 | LONGMONT | 026D | 2006-09-26 | Yes |
| 720-439 | DENVER | 6010 | 2010-04-21 | Yes |
| 720-440 | DENVER | 6010 | 2010-05-12 | Yes |
| 720-441 | DENVER | 078F | 2011-05-18 | Yes |
| 720-442 | LONGMONT | 078F | 2011-04-04 | Yes |
| 720-443 | DENVER | 078F | 2010-10-07 | Yes |
| 720-444 | DENVER | 9636 | — | — |
| 720-445 | DENVER | 6567 | 2010-09-15 | Yes |
| 720-446 | DENVER | 7229 | 2011-02-23 | Yes |
| 720-447 | DENVER | 6010 | 2008-02-22 | Yes |
| 720-448 | DENVER | 6010 | 2008-04-09 | Yes |
| 720-449 | DENVER | 7229 | — | Yes |
| 720-450 | DENVER | 7229 | 2014-01-08 | Yes |
| 720-451 | DENVER | 6529 | 2013-10-25 | Yes |
| 720-452 | DENVER | 278F | 2010-12-28 | Yes |
| 720-453 | LONGMONT | 6529 | — | Yes |
| 720-454 | DENVER | 829J | 2010-08-11 | Yes |
| 720-455 | DENVER | 9636 | 2010-07-02 | Yes |
| 720-456 | DENVER | 4574 | 2013-07-23 | Yes |
| 720-457 | DENVER | 6118 | — | Yes |
| 720-458 | DENVER | 4574 | 2010-09-27 | Yes |
| 720-459 | DENVER | 026D | 2010-10-15 | Yes |
| 720-460 | DENVER | 3467 | 2013-11-13 | Yes |
| 720-461 | DENVER | 5562 | 2015-12-22 | Yes |
| 720-462 | DENVER | 7229 | 2016-11-23 | Yes |
| 720-463 | DECKERS | 026D | 2013-02-05 | Yes |
| 720-464 | DENVER | 078F | 2011-04-21 | Yes |
| 720-465 | DENVER | 6010 | 2012-01-03 | Yes |
| 720-466 | FORTLUPTON | 6010 | 2010-06-28 | Yes |
| 720-467 | DENVER | 6567 | 2014-01-10 | Yes |
| 720-468 | DENVER | 6118 | 2001-12-17 | Yes |
| 720-469 | DENVER | 6010 | 2011-09-23 | Yes |
| 720-470 | DENVER | 6567 | — | Yes |
| 720-471 | DENVER | 6567 | 2014-06-12 | Yes |
| 720-472 | DENVER | 7378 | — | Yes |
| 720-473 | DENVER | 026D | — | Yes |
| 720-474 | DENVER | 6529 | 2011-10-31 | Yes |
| 720-475 | DENVER | 7378 | — | Yes |
| 720-476 | DENVER | 6010 | 2014-05-19 | Yes |
| 720-477 | DENVER | 026D | 2011-08-09 | Yes |
| 720-478 | DENVER | 4574 | 2013-05-08 | Yes |
| 720-479 | DENVER | 7378 | — | Yes |
| 720-480 | DENVER | 6010 | — | — |
| 720-481 | DENVER | 6010 | 2014-08-15 | Yes |
| 720-482 | DENVER | 9636 | — | — |
| 720-483 | DENVER | 6010 | 2014-08-04 | Yes |
| 720-484 | DENVER | 3467 | 2011-07-18 | Yes |
| 720-485 | DENVER | 318J | 2014-05-08 | Yes |
| 720-486 | DENVER | 6010 | 2014-08-18 | Yes |
| 720-487 | LONGMONT | 073H | 2016-12-09 | Yes |
| 720-488 | DENVER | 9636 | — | — |
| 720-489 | DENVER | 9636 | — | — |
| 720-490 | DENVER | 6529 | — | Yes |
| 720-491 | LONGMONT | 6010 | 2011-11-16 | Yes |
| 720-492 | DENVER | 6529 | 2014-08-25 | Yes |
| 720-493 | DENVER | 9636 | — | — |
| 720-494 | LONGMONT | 9636 | — | — |
| 720-495 | DENVER | 6010 | 2001-09-28 | — |
| 720-496 | DENVER | 6118 | 2001-12-17 | Yes |
| 720-497 | DENVER | 9636 | — | — |
| 720-498 | DENVER | 6567 | 2012-09-10 | Yes |
| 720-499 | DENVER | 6529 | 2011-08-09 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.