All assignees
800 prefixes in 240 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 240-500 | HAGERSTOWN | 829J | 2010-10-21 | Yes |
| 240-501 | WSHNGTNZN3 | 6855 | 2001-10-08 | Yes |
| 240-502 | WSHNGTNZN3 | 071F | — | Yes |
| 240-503 | TOMPKINSVL | 568G | 2013-04-09 | Yes |
| 240-504 | WSHNGTNZN3 | 6855 | 2011-10-04 | Yes |
| 240-505 | WSHNGTNZN3 | 6855 | 2001-10-31 | — |
| 240-506 | WSNGTNZN10 | 4036 | 2002-01-09 | Yes |
| 240-507 | WSHNGTNZN2 | 6395 | 2008-09-05 | Yes |
| 240-508 | WSHNGTNZN5 | 5562 | — | Yes |
| 240-509 | WSNG238Z14 | 071F | 2008-03-31 | Yes |
| 240-510 | WSNG236Z15 | 7229 | — | Yes |
| 240-511 | XXXXXXXXXX | MULT | — | — |
| 240-512 | WSNG238Z13 | 2593 | 2006-08-08 | Yes |
| 240-513 | HAGERSTOWN | 6855 | 2011-10-19 | Yes |
| 240-514 | WSNGTNZN11 | 829J | — | Yes |
| 240-515 | WSHNGTNZN2 | 4036 | 2001-06-20 | Yes |
| 240-516 | WSNGTNZN12 | 829J | — | Yes |
| 240-517 | LAUREL238 | 6395 | 2014-10-28 | Yes |
| 240-518 | WALDORF | 732J | — | Yes |
| 240-519 | WSHNGTNZN2 | 4036 | — | Yes |
| 240-520 | HAGERSTOWN | 6855 | 2006-03-29 | Yes |
| 240-521 | LAUREL236 | 4036 | 2018-01-11 | Yes |
| 240-522 | CUMBERLAND | 5562 | 2001-12-12 | Yes |
| 240-523 | LA PLATA | 7229 | 2001-02-13 | Yes |
| 240-524 | LAUREL236 | 568G | — | Yes |
| 240-525 | WSNG236Z15 | 568G | — | Yes |
| 240-526 | LEONARDTN | 568G | — | Yes |
| 240-527 | HAGERSTOWN | 9212 | — | Yes |
| 240-528 | HUGHESVL | 6119 | — | Yes |
| 240-529 | FREDERICK | 9212 | — | Yes |
| 240-530 | WALDORF | 2593 | — | Yes |
| 240-531 | WSHNGTNZN3 | 073H | 2017-03-07 | Yes |
| 240-532 | WSHNGTNZN5 | 6395 | 2013-10-29 | Yes |
| 240-533 | WSHNGTNZN3 | 7529 | — | Yes |
| 240-534 | WSHNGTNZN2 | 6395 | 2016-04-11 | Yes |
| 240-535 | WSHNGTNZN3 | 4036 | 2001-01-09 | — |
| 240-536 | ASHTON236 | 568G | — | Yes |
| 240-537 | HAGERSTOWN | 361H | 2017-09-15 | Yes |
| 240-538 | LEONARDTN | 7229 | 2001-02-13 | Yes |
| 240-539 | WSHNGTNZN4 | 568G | — | Yes |
| 240-540 | WSNG238Z13 | 507J | 2016-10-05 | Yes |
| 240-541 | WSHNGTNZN2 | 4036 | — | Yes |
| 240-542 | WSNG236Z13 | 829J | — | Yes |
| 240-543 | WSHNGTNZN2 | 6855 | 2006-07-25 | Yes |
| 240-544 | WSNG236Z14 | 829J | — | Yes |
| 240-545 | WSNG236Z15 | 829J | — | Yes |
| 240-546 | WSNGTNZN16 | 829J | — | Yes |
| 240-547 | LAUREL236 | 6119 | — | Yes |
| 240-548 | WSNG236Z14 | 2593 | — | Yes |
| 240-549 | FREDERICK | 6395 | 2016-03-17 | Yes |
| 240-550 | WSNGTNZN10 | 4036 | 2009-03-26 | Yes |
| 240-551 | WSNGTNZN10 | 4036 | 2009-03-25 | Yes |
| 240-552 | WSNGTNZN10 | 4036 | 2009-03-25 | Yes |
| 240-553 | WSNG236Z13 | 7229 | — | Yes |
| 240-554 | LAUREL236 | 7229 | — | Yes |
| 240-555 | DIR ASST | MULT | — | — |
| 240-556 | WSNG236Z14 | 829J | — | Yes |
| 240-557 | WSHNGTNZN6 | 6855 | 2017-03-14 | Yes |
| 240-558 | WSNGTNZN11 | 829J | — | Yes |
| 240-559 | ASHTON236 | 7229 | — | Yes |
| 240-560 | WSNGTNZN12 | 7229 | 2001-04-23 | Yes |
| 240-561 | LEONARDTN | 6395 | 2008-07-07 | Yes |
| 240-562 | GAITHERSBG | 7229 | 2015-06-12 | Yes |
| 240-563 | WSHNGTNZN5 | 876D | 2017-07-05 | Yes |
| 240-564 | LAUREL236 | 6855 | 2018-12-21 | Yes |
| 240-565 | LAUREL238 | 6855 | 2005-12-30 | Yes |
| 240-566 | FREDERICK | 9212 | 2002-06-11 | Yes |
| 240-567 | WSNGTNZN10 | 9212 | 2006-07-12 | Yes |
| 240-568 | LAUREL236 | 9212 | — | — |
| 240-569 | FLINTSTONE | 071F | 2017-09-22 | Yes |
| 240-570 | ASHTON238 | 876D | 2016-02-24 | Yes |
| 240-571 | LAUREL238 | 6395 | 2021-01-14 | Yes |
| 240-572 | LEONARDTN | 6395 | 2017-11-15 | Yes |
| 240-573 | WSNG236Z15 | 6119 | — | Yes |
| 240-574 | FRIENDSVL | 4036 | 2020-08-27 | Yes |
| 240-575 | FREDERICK | 6119 | 2005-12-30 | Yes |
| 240-576 | HAGERSTOWN | 197D | 2017-12-20 | Yes |
| 240-577 | LEONARDTN | 6395 | 2006-08-09 | Yes |
| 240-578 | FREDERICK | 6395 | 2011-07-08 | Yes |
| 240-579 | ASHTON236 | 6855 | 2018-01-11 | Yes |
| 240-580 | CUMBERLAND | 6855 | 2001-06-14 | Yes |
| 240-581 | LAUREL236 | 829J | — | Yes |
| 240-582 | WSHNGTNZN4 | 9212 | — | Yes |
| 240-583 | LAUREL236 | 9212 | 2010-04-28 | Yes |
| 240-584 | LAUREL236 | 6855 | 2018-01-11 | Yes |
| 240-585 | WALDORF | 6395 | 2011-06-29 | Yes |
| 240-586 | FREDERICK | 9212 | 2006-12-22 | Yes |
| 240-587 | LEONARDTN | 6395 | 2009-07-06 | Yes |
| 240-588 | GRANTSVL | 7229 | 2018-02-01 | Yes |
| 240-589 | MCCOOLE | 4036 | 2018-03-07 | Yes |
| 240-590 | WSNGTNZN12 | 5562 | 2018-04-09 | Yes |
| 240-591 | HAGERSTOWN | 836G | 2018-04-17 | Yes |
| 240-592 | WSNG236Z13 | 9212 | 2016-07-01 | Yes |
| 240-593 | LAUREL238 | 6855 | 2001-03-13 | Yes |
| 240-594 | BITTINGER | 071F | 2018-05-15 | Yes |
| 240-595 | WSHNGTNZN3 | 6395 | 2006-09-13 | Yes |
| 240-596 | ASHTON236 | 2593 | 2018-06-11 | Yes |
| 240-597 | GAITHERSBG | 568G | — | Yes |
| 240-598 | HUGHESVL | 2593 | 2018-06-11 | Yes |
| 240-599 | WSNGTNZN10 | 6119 | — | 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.