All assignees
800 prefixes in 720 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 720-600 | LONGMONT | 026D | 2012-12-20 | Yes |
| 720-601 | DENVER | 6567 | 2017-12-21 | Yes |
| 720-602 | DENVER | 6529 | 2017-07-31 | Yes |
| 720-603 | DENVER | 4574 | 2017-09-01 | Yes |
| 720-604 | DENVER | 078F | 2022-12-16 | Yes |
| 720-605 | DENVER | 026D | 2015-11-17 | Yes |
| 720-606 | FORTLUPTON | 6010 | 2011-08-12 | Yes |
| 720-607 | DENVER | 6567 | 2017-03-16 | Yes |
| 720-608 | GEORGETOWN | 078F | 2010-07-19 | Yes |
| 720-609 | DENVER | 6010 | 2014-06-03 | Yes |
| 720-610 | DENVER | 6567 | 2018-07-30 | Yes |
| 720-611 | XXXXXXXXXX | MULT | — | — |
| 720-612 | DENVER | 6529 | 2011-07-22 | Yes |
| 720-613 | HUDSON | 7229 | 2013-03-01 | Yes |
| 720-614 | DENVER | 996H | 2018-10-04 | Yes |
| 720-615 | KEENESBURG | 078F | 2020-08-17 | Yes |
| 720-616 | DENVER | 6118 | 2014-08-29 | Yes |
| 720-617 | DENVER | 829J | 2019-04-18 | Yes |
| 720-618 | DENVER | 6567 | 2014-07-10 | Yes |
| 720-619 | GEORGETOWN | 078F | 2014-03-25 | Yes |
| 720-620 | DENVER | 6010 | 2002-03-27 | — |
| 720-621 | DENVER | 6010 | 2002-03-27 | — |
| 720-622 | DENVER | 9636 | — | Yes |
| 720-623 | DENVER | 026D | 2012-02-17 | Yes |
| 720-624 | DENVER | 7378 | — | Yes |
| 720-625 | DENVER | 829J | 2011-09-20 | Yes |
| 720-626 | DENVER | 6567 | 2011-01-11 | Yes |
| 720-627 | DENVER | 9636 | 2012-03-06 | Yes |
| 720-628 | DENVER | 6010 | 2002-03-04 | — |
| 720-629 | DENVER | 6010 | 2002-03-04 | — |
| 720-630 | DENVER | 6010 | 2013-10-23 | Yes |
| 720-631 | DENVER | 7229 | 2017-04-03 | Yes |
| 720-632 | DENVER | 7378 | 2018-01-11 | Yes |
| 720-633 | DENVER | 6010 | 2010-12-28 | Yes |
| 720-634 | DENVER | 7229 | 2012-11-16 | Yes |
| 720-635 | DENVER | 6010 | — | — |
| 720-636 | DENVER | 6567 | 2013-11-13 | Yes |
| 720-637 | DENVER | 026D | 2021-10-21 | Yes |
| 720-638 | DENVER | 318J | 2013-01-17 | Yes |
| 720-639 | DENVER | 026D | 2014-05-14 | Yes |
| 720-640 | HUDSON | 6118 | 2019-01-28 | Yes |
| 720-641 | DENVER | 6529 | — | Yes |
| 720-642 | DENVER | 6567 | 2015-10-22 | Yes |
| 720-643 | DENVER | 6118 | 2015-08-24 | Yes |
| 720-644 | DENVER | 829J | 2011-04-01 | Yes |
| 720-645 | DENVER | 6529 | 2014-03-05 | Yes |
| 720-646 | DENVER | 6010 | 2015-10-07 | Yes |
| 720-647 | DENVER | 026D | 2019-05-20 | Yes |
| 720-648 | DENVER | 6567 | 2011-05-10 | Yes |
| 720-649 | GEORGETOWN | 078F | 2018-08-30 | Yes |
| 720-650 | DENVER | 026D | 2017-08-17 | Yes |
| 720-651 | DENVER | 6567 | 2015-10-15 | Yes |
| 720-652 | LONGMONT | 9636 | — | — |
| 720-653 | DENVER | 6567 | 2019-06-03 | Yes |
| 720-654 | DENVER | 6010 | 2022-01-10 | Yes |
| 720-655 | DENVER | 6529 | 2021-08-30 | Yes |
| 720-656 | DENVER | 6010 | 2015-10-07 | Yes |
| 720-657 | DENVER | 078F | 2019-02-25 | Yes |
| 720-658 | DENVER | 016G | 2010-03-26 | — |
| 720-659 | DENVER | 197D | 2022-07-15 | Yes |
| 720-660 | DENVER | 6567 | 2014-04-08 | Yes |
| 720-661 | DENVER | 6567 | 2018-12-24 | Yes |
| 720-662 | DENVER | 6529 | 2014-09-30 | Yes |
| 720-663 | DENVER | 078F | 2008-05-28 | Yes |
| 720-664 | ALLNSPKLYN | 026D | 2019-08-16 | Yes |
| 720-665 | DENVER | 6567 | 2017-08-30 | Yes |
| 720-666 | DENVER | 278F | 2012-05-23 | Yes |
| 720-667 | DENVER | 318J | 2017-11-21 | Yes |
| 720-668 | DENVER | 6567 | 2014-10-16 | Yes |
| 720-669 | HUDSON | 026D | 2014-12-12 | Yes |
| 720-670 | DENVER | 6567 | — | Yes |
| 720-671 | DENVER | 6567 | 2019-04-25 | Yes |
| 720-672 | DENVER | 6567 | 2019-09-30 | Yes |
| 720-673 | DENVER | 114J | 2019-08-23 | Yes |
| 720-674 | DENVER | 318J | 2020-02-20 | Yes |
| 720-675 | DENVER | 6010 | 2009-05-12 | Yes |
| 720-676 | DENVER | 7229 | 2016-08-29 | Yes |
| 720-677 | DENVER | 026D | 2019-06-20 | Yes |
| 720-678 | DENVER | 425J | 2019-10-09 | Yes |
| 720-679 | GEORGETOWN | 026D | 2019-08-16 | Yes |
| 720-680 | LONGMONT | 6529 | 2020-06-04 | Yes |
| 720-681 | DENVER | 6529 | 2019-04-09 | Yes |
| 720-682 | DENVER | 6567 | 2018-10-22 | Yes |
| 720-683 | FORTLUPTON | 078F | 2013-05-15 | Yes |
| 720-684 | LONGMONT | 6118 | — | Yes |
| 720-685 | DENVER | 9636 | — | Yes |
| 720-686 | DENVER | 7229 | 2010-10-14 | Yes |
| 720-687 | DENVER | 6529 | 2019-11-19 | Yes |
| 720-688 | DENVER | 6010 | 2015-07-15 | Yes |
| 720-689 | DENVER | 078F | 2011-04-04 | Yes |
| 720-690 | DENVER | 6010 | 2002-03-27 | — |
| 720-691 | DENVER | 6529 | 2019-06-25 | Yes |
| 720-692 | DENVER | 5562 | 2015-05-27 | Yes |
| 720-693 | DENVER | 6567 | 2017-01-11 | Yes |
| 720-694 | DENVER | 6529 | 2020-03-24 | Yes |
| 720-695 | DENVER | 7229 | 2014-08-12 | Yes |
| 720-696 | DENVER | 078F | 2015-06-01 | Yes |
| 720-697 | DENVER | 508J | 2015-11-09 | Yes |
| 720-698 | LONGMONT | 6567 | 2022-03-15 | Yes |
| 720-699 | DENVER | 026D | 2014-11-11 | 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.