All assignees
800 prefixes in 240 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 240-700 | — | — | ||
| 240-701 | WSHNGTNZN3 | 4036 | 2009-03-25 | Yes |
| 240-702 | GAITHERSBG | 6395 | 2014-10-07 | Yes |
| 240-703 | ASHTON236 | 6855 | 2021-02-10 | Yes |
| 240-704 | WSHNGTNZN3 | 4036 | 2009-03-25 | Yes |
| 240-705 | WSHNGTNZN3 | 4036 | 2009-03-25 | Yes |
| 240-706 | WSHNGTNZN3 | 4036 | 2009-03-26 | Yes |
| 240-707 | HAGERSTOWN | 4036 | 2012-01-27 | Yes |
| 240-708 | LAUREL238 | 6119 | 2012-06-08 | Yes |
| 240-709 | LAUREL236 | 6855 | 2019-10-25 | Yes |
| 240-710 | FREDERICK | 7228 | 2019-12-30 | Yes |
| 240-711 | XXXXXXXXXX | MULT | — | — |
| 240-712 | LAUREL238 | 6395 | 2011-11-01 | Yes |
| 240-713 | LAUREL236 | 568G | 2011-11-02 | Yes |
| 240-714 | WSHNGTNZN4 | 6855 | 2015-02-20 | Yes |
| 240-715 | WSNGTNZN10 | 6119 | — | Yes |
| 240-716 | WSHNGTNZN5 | 6855 | 2013-11-15 | Yes |
| 240-717 | LEONARDTN | 624H | 2021-04-22 | Yes |
| 240-718 | LXTNPKGRML | 7229 | 2001-02-13 | Yes |
| 240-719 | WSHNGTNZN5 | 6395 | 2016-04-11 | Yes |
| 240-720 | GAITHERSBG | 6119 | — | Yes |
| 240-721 | WSHNGTNZN5 | 9212 | 2020-03-19 | Yes |
| 240-722 | ASHTON236 | 6855 | — | Yes |
| 240-723 | WSHNGTNZN3 | 6395 | — | Yes |
| 240-724 | WSHNGTNZN6 | 829J | — | Yes |
| 240-725 | LXTNPKGRML | 9212 | — | Yes |
| 240-726 | WSHNGTNZN4 | 478J | 2020-09-01 | Yes |
| 240-727 | CUMBERLAND | 4036 | — | Yes |
| 240-728 | WSNGTNZN10 | 197D | 2020-05-12 | Yes |
| 240-729 | ASHTON236 | 6855 | 2020-06-16 | Yes |
| 240-730 | HAGERSTOWN | 321J | 2020-08-12 | Yes |
| 240-731 | WSNGTNZN10 | 4036 | — | — |
| 240-732 | MOUNT AIRY | 4036 | 2015-11-12 | Yes |
| 240-733 | ASHTON236 | 965H | 2020-07-15 | Yes |
| 240-734 | SMITHSBURG | 071F | 2012-03-22 | Yes |
| 240-735 | BRUNSWICK | 478J | 2020-09-01 | Yes |
| 240-736 | LAUREL236 | 4036 | 2020-09-02 | Yes |
| 240-737 | WSHNGTNZN4 | 829J | 2001-05-09 | — |
| 240-738 | HANCOCK | 6395 | 2020-09-03 | Yes |
| 240-739 | FREDERICK | 515J | 2020-09-15 | Yes |
| 240-740 | WSNGTNZN10 | 361H | 2015-09-03 | Yes |
| 240-741 | FREDERICK | 996H | 2020-10-01 | Yes |
| 240-742 | WSNG238Z14 | 478J | 2020-11-20 | Yes |
| 240-743 | WSHNGTNZN2 | 6395 | — | Yes |
| 240-744 | WSHNGTNZN2 | 6119 | — | Yes |
| 240-745 | DAMASCS236 | 7229 | — | Yes |
| 240-746 | BRANDYWINE | 7421 | 2020-12-04 | Yes |
| 240-747 | WSNGTNZN11 | 829J | 2001-05-09 | Yes |
| 240-748 | WSHNGTNZN3 | 7529 | 2020-12-23 | Yes |
| 240-749 | LAUREL238 | 6395 | 2021-01-12 | Yes |
| 240-750 | GAITHERSBG | 4036 | 2005-05-06 | Yes |
| 240-751 | GAITHERSBG | 6119 | — | Yes |
| 240-752 | WSHNGTNZN2 | 6119 | — | Yes |
| 240-753 | WSNGTNZN10 | 6119 | — | Yes |
| 240-754 | WALDORF | 6119 | 2011-11-11 | Yes |
| 240-755 | LAUREL238 | 318J | 2006-01-05 | Yes |
| 240-756 | WSNGTNZN10 | 6855 | 2021-02-10 | Yes |
| 240-757 | WSNG236Z13 | 568G | — | Yes |
| 240-758 | LAUREL236 | 4036 | 2016-03-03 | Yes |
| 240-759 | WSNG238Z15 | 876D | 2021-03-25 | Yes |
| 240-760 | WSHNGTNZN2 | 6395 | 2015-09-22 | Yes |
| 240-761 | LAUREL236 | 4036 | 2021-07-20 | Yes |
| 240-762 | WSHNGTNZN2 | 6395 | 2012-08-22 | Yes |
| 240-763 | WSNG238Z15 | 071F | 2015-10-01 | Yes |
| 240-764 | WSHNGTNZN4 | 7229 | — | Yes |
| 240-765 | WSHNGTNZN5 | 7229 | — | Yes |
| 240-766 | WSHNGTNZN6 | 7229 | — | Yes |
| 240-767 | WSHNGTNZN5 | 829J | 2001-05-09 | Yes |
| 240-768 | NANJEMOY | 624H | 2021-04-22 | Yes |
| 240-769 | KEEDYSVL | 071F | 2021-07-20 | Yes |
| 240-770 | WSHNGTNZN4 | 318J | 2004-11-22 | Yes |
| 240-771 | POOLESVL | 876D | 2016-02-18 | Yes |
| 240-772 | FREDERICK | 6395 | 2011-11-17 | Yes |
| 240-773 | WSNGTNZN10 | 9212 | — | — |
| 240-774 | LONACONING | 071F | 2015-10-05 | Yes |
| 240-775 | WESTERNPT | 071F | 2015-10-05 | Yes |
| 240-776 | LA PLATA | 6119 | — | Yes |
| 240-777 | WSNGTNZN10 | 9212 | — | — |
| 240-778 | WSNGTNZN10 | 7229 | — | Yes |
| 240-779 | ASHTON236 | 829J | — | Yes |
| 240-780 | GAITHERSBG | 6119 | — | Yes |
| 240-781 | WSHNGTNZN2 | 7229 | 2015-08-18 | Yes |
| 240-782 | DAMASCS236 | 876D | — | Yes |
| 240-783 | WSHNGTNZN2 | 8605 | — | — |
| 240-784 | MYERSVILLE | 6855 | 2001-06-06 | Yes |
| 240-785 | OAKLAND | 071F | 2021-07-20 | Yes |
| 240-786 | LAUREL236 | 6119 | — | Yes |
| 240-787 | BRANDYWINE | 6119 | — | Yes |
| 240-788 | WSHNGTNZN5 | 6119 | — | Yes |
| 240-789 | WSNGTNZN10 | 181J | 2021-08-10 | Yes |
| 240-790 | WSNG236Z13 | 6119 | — | Yes |
| 240-791 | WSHNGTNZN4 | 6855 | 2021-08-11 | Yes |
| 240-792 | FREDERICK | 6855 | 2021-08-11 | Yes |
| 240-793 | GAITHERSBG | 5562 | 2001-03-15 | Yes |
| 240-794 | LXTNPKGRML | 6119 | — | Yes |
| 240-795 | WSHNGTNZN5 | 6395 | 2021-08-12 | Yes |
| 240-796 | WSNGTNZN10 | 6855 | 2021-08-25 | Yes |
| 240-797 | ASHTON236 | 6855 | 2021-08-25 | Yes |
| 240-798 | GAITHERSBG | 876D | 2021-09-01 | Yes |
| 240-799 | BRANDYWINE | 965H | 2020-06-26 | 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.