All assignees
800 prefixes in 240 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 240-600 | WSHNGTNZN2 | 6855 | 2011-04-27 | Yes |
| 240-601 | WSHNGTNZN3 | 6855 | — | Yes |
| 240-602 | WSHNGTNZN3 | 6855 | — | Yes |
| 240-603 | WSHNGTNZN3 | 6855 | — | Yes |
| 240-604 | WSHNGTNZN3 | 6855 | — | Yes |
| 240-605 | WSHNGTNZN3 | 6855 | — | Yes |
| 240-606 | WSHNGTNZN3 | 6855 | — | Yes |
| 240-607 | WALDORF | 6119 | — | Yes |
| 240-608 | FREDERICK | 551G | 2013-03-11 | Yes |
| 240-609 | CUMBERLAND | 4036 | 2014-09-11 | Yes |
| 240-610 | WSHNGTNZN4 | 2593 | 2018-06-11 | Yes |
| 240-611 | XXXXXXXXXX | MULT | — | — |
| 240-612 | WSHNGTNZN5 | 7591 | — | Yes |
| 240-613 | WSHNGTNZN4 | 829J | 2012-04-05 | Yes |
| 240-614 | WSNGTNZN10 | 5562 | 2013-07-16 | Yes |
| 240-615 | WSHNGTNZN4 | 5562 | 2013-05-29 | Yes |
| 240-616 | WSNG236Z13 | 7229 | — | Yes |
| 240-617 | HIGHFIELD | 071F | 2015-07-16 | Yes |
| 240-618 | WSNGTNZN10 | 6395 | 2014-10-07 | Yes |
| 240-619 | WSHNGTNZN5 | 318J | — | Yes |
| 240-620 | WSNGTNZN10 | 7229 | — | Yes |
| 240-621 | WSNGTNZN11 | 071F | — | Yes |
| 240-622 | LA PLATA | 2593 | 2018-06-11 | Yes |
| 240-623 | WSHNGTNZN4 | 071F | 2014-12-08 | Yes |
| 240-624 | WSNG236Z13 | 9212 | — | Yes |
| 240-625 | HAGERSTOWN | 5562 | 2001-04-17 | Yes |
| 240-626 | FREDERICK | 6855 | — | Yes |
| 240-627 | WSNGTNZN11 | 6119 | — | Yes |
| 240-628 | MECHANCSVL | 2593 | 2018-06-11 | Yes |
| 240-629 | FREDERICK | 9212 | — | Yes |
| 240-630 | WSHNGTNZN2 | 071F | 2011-10-31 | Yes |
| 240-631 | GAITHERSBG | 9212 | — | — |
| 240-632 | GAITHERSBG | 9212 | — | — |
| 240-633 | HUGHESVL | 8697 | 2015-05-22 | Yes |
| 240-634 | RIDGE | 2593 | 2018-06-11 | Yes |
| 240-635 | TOMPKINSVL | 2593 | 2018-06-11 | Yes |
| 240-636 | LAUREL236 | 6855 | — | Yes |
| 240-637 | WSHNGTNZN3 | 2593 | 2018-06-11 | Yes |
| 240-638 | WSHNGTNZN3 | 6119 | — | Yes |
| 240-639 | LAUREL236 | 2593 | 2018-06-01 | Yes |
| 240-640 | WALDORF | 4036 | 2009-03-24 | Yes |
| 240-641 | WSHNGTNZN3 | 568G | — | Yes |
| 240-642 | WSNGTNZN10 | 181J | 2018-08-02 | Yes |
| 240-643 | WSHNGTNZN3 | 6855 | 2002-05-16 | Yes |
| 240-644 | WSHNGTNZN2 | 7229 | — | Yes |
| 240-645 | WSHNGTNZN3 | 7229 | — | Yes |
| 240-646 | LAUREL236 | 829J | — | Yes |
| 240-647 | CLEAR SPG | 2593 | 2018-06-11 | Yes |
| 240-648 | KEEDYSVL | 2593 | 2018-06-12 | Yes |
| 240-649 | SMITHSBURG | 2593 | 2018-06-12 | Yes |
| 240-650 | WSHNGTNZN3 | 876D | 2011-11-17 | Yes |
| 240-651 | FREDERICK | 6395 | — | Yes |
| 240-652 | MECHANCSVL | 7229 | 2001-02-13 | Yes |
| 240-653 | LAUREL238 | 568G | — | Yes |
| 240-654 | GAITHERSBG | 4036 | 2006-05-19 | Yes |
| 240-655 | KITZMILLER | 876D | 2017-12-18 | Yes |
| 240-656 | FREDERICK | 4036 | 2019-08-30 | Yes |
| 240-657 | FROSTBURG | 7228 | 2016-01-06 | Yes |
| 240-658 | GAITHERSBG | 197D | 2018-12-04 | Yes |
| 240-659 | ASHTON236 | 6855 | 2019-01-30 | Yes |
| 240-660 | WSNGTNZN10 | 6395 | 2015-03-31 | Yes |
| 240-661 | LXTNPKGRML | 8697 | 2015-05-21 | Yes |
| 240-662 | WSHNGTNZN3 | 9212 | — | — |
| 240-663 | MIDDLETOWN | 6855 | 2019-01-30 | Yes |
| 240-664 | CUMBERLAND | 568G | 2019-03-06 | Yes |
| 240-665 | WSNGTNZN10 | 6855 | 2017-01-09 | Yes |
| 240-666 | NANJEMOY | 876D | — | Yes |
| 240-667 | WSHNGTNZN4 | 6119 | — | Yes |
| 240-668 | DAMASCS236 | 8832 | — | Yes |
| 240-669 | WSNGTNZN11 | 318J | — | Yes |
| 240-670 | WSHNGTNZN3 | 071F | — | Yes |
| 240-671 | WSHNGTNZN2 | 6855 | — | Yes |
| 240-672 | WSNGTNZN10 | 6395 | — | Yes |
| 240-673 | WSHNGTNZN2 | 071F | 2019-05-17 | Yes |
| 240-674 | FREDERICK | 5562 | — | Yes |
| 240-675 | MYERSVILLE | 4036 | — | — |
| 240-676 | WSHNGTNZN3 | 6395 | — | Yes |
| 240-677 | WSHNGTNZN5 | 7229 | 2019-05-20 | Yes |
| 240-678 | WSHNGTNZN3 | 6395 | — | Yes |
| 240-679 | FRIENDSVL | 2593 | 2018-06-11 | Yes |
| 240-680 | FREDERICK | 568G | 2018-10-29 | Yes |
| 240-681 | BRANDYWINE | 829J | 2003-10-30 | Yes |
| 240-682 | WALDORF | 8832 | — | Yes |
| 240-683 | GAITHERSBG | 9212 | — | — |
| 240-684 | WSNG236Z13 | 9212 | — | Yes |
| 240-685 | BRANDYWINE | 6119 | — | Yes |
| 240-686 | GAITHERSBG | 9212 | — | Yes |
| 240-687 | WSHNGTNZN3 | 6395 | — | — |
| 240-688 | WSHNGTNZN3 | 6395 | 2006-06-12 | Yes |
| 240-689 | WSNG236Z15 | 425J | 2019-05-28 | Yes |
| 240-690 | GAITHERSBG | 7529 | 2016-11-10 | Yes |
| 240-691 | WSHNGTNZN5 | 6119 | — | Yes |
| 240-692 | GRANTSVL | 6119 | 2019-05-30 | Yes |
| 240-693 | WALKERSVL | 568G | 2019-09-25 | Yes |
| 240-694 | WSHNGTNZN2 | 9212 | — | Yes |
| 240-695 | WSHNGTNZN5 | 9212 | — | Yes |
| 240-696 | WSHNGTNZN4 | 6119 | — | Yes |
| 240-697 | MECHANCSVL | 469J | 2019-09-12 | Yes |
| 240-698 | MYERSVILLE | 6855 | 2019-10-15 | Yes |
| 240-699 | BUCKEYSTN | 9212 | 2001-05-22 | 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.