All assignees
649 prefixes in 571 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 571-600 | DULLESMTRO | 145J | 2019-03-28 | Yes |
| 571-601 | LEESBURG | 138E | 2020-05-12 | Yes |
| 571-602 | MANASSAS | 4036 | 2022-10-12 | Yes |
| 571-603 | WSNGTNZN17 | 6855 | 2023-01-09 | Yes |
| 571-604 | WSNGTNZN19 | 6855 | 2023-01-11 | Yes |
| 571-605 | DALE CITY | 4036 | 2023-01-11 | Yes |
| 571-606 | MANASSAS | 4036 | 2009-01-19 | Yes |
| 571-607 | WSNGTNZN08 | 7229 | 2023-01-19 | Yes |
| 571-608 | WSNGTNZN08 | 7229 | 2023-01-19 | Yes |
| 571-609 | WSNGTNZN19 | 6827 | 2022-10-13 | Yes |
| 571-610 | WSNGTNZN08 | 7229 | 2023-01-19 | Yes |
| 571-611 | XXXXXXXXXX | MULT | — | — |
| 571-612 | HERNDON | 6827 | 2010-09-08 | Yes |
| 571-613 | WSNGTNZN08 | 7229 | 2023-01-19 | Yes |
| 571-614 | WSNGTNZN08 | 7229 | 2023-01-19 | Yes |
| 571-615 | INDENDNTHL | 138E | 2021-04-30 | Yes |
| 571-616 | ENGLESIDE | 7229 | 2017-09-14 | Yes |
| 571-617 | LEESBURG | 732J | 2023-02-13 | Yes |
| 571-618 | WSNGTNZN17 | 4036 | 2023-04-20 | Yes |
| 571-619 | MANASSAS | 6827 | 2018-06-14 | Yes |
| 571-620 | WSNGTNZN17 | 275G | 2013-01-18 | Yes |
| 571-621 | MANASSAS | 6855 | 2019-08-20 | Yes |
| 571-622 | WSNGTNZN08 | 6855 | 2021-12-07 | Yes |
| 571-623 | WSNGTNZN17 | 6827 | 2012-09-04 | Yes |
| 571-624 | WSNGTNZN08 | 4036 | 2023-08-24 | Yes |
| 571-625 | TRIANGLE | 079F | 2025-03-14 | Yes |
| 571-626 | TRIANGLE | 516J | 2022-03-04 | Yes |
| 571-627 | LEESBURG | 4644 | 2023-11-17 | Yes |
| 571-628 | DALE CITY | 4036 | 2023-12-08 | Yes |
| 571-629 | WSNGTNZN08 | 4036 | 2023-12-21 | Yes |
| 571-630 | WSNGTNZN17 | 7529 | 2024-02-26 | Yes |
| 571-631 | WSNGTNZN19 | 6855 | 2024-02-28 | Yes |
| 571-632 | MANASSAS | 6855 | 2024-03-12 | Yes |
| 571-633 | WSNGTNZN17 | 9213 | — | Yes |
| 571-634 | WSNGTNZN17 | 6855 | 2018-09-26 | Yes |
| 571-635 | WSNGTNZN17 | 6855 | 2015-01-23 | Yes |
| 571-636 | HAYMARKET | 079F | 2018-03-19 | Yes |
| 571-637 | WSNGTNZN08 | 7529 | 2023-04-26 | Yes |
| 571-638 | HERNDON | 7529 | 2023-05-05 | Yes |
| 571-639 | ARCOLA | 4036 | 2015-08-25 | Yes |
| 571-640 | MANASSAS | 138E | 2023-05-31 | Yes |
| 571-641 | WSNGTNZN17 | 8830 | 2001-01-19 | Yes |
| 571-642 | ENGLESIDE | 9213 | 2001-08-28 | Yes |
| 571-643 | HERNDON | 9213 | 2001-08-28 | Yes |
| 571-644 | ENGLESIDE | 7229 | 2021-01-15 | Yes |
| 571-645 | WSNGTNZN08 | 4036 | 2014-10-14 | Yes |
| 571-646 | ENGLESIDE | 138E | 2021-04-14 | Yes |
| 571-647 | WSNGTNZN17 | 4036 | 2023-07-07 | Yes |
| 571-648 | WSNGTNZN17 | 6855 | 2023-07-18 | Yes |
| 571-649 | WSNGTNZN19 | 9213 | 2018-04-12 | Yes |
| 571-650 | ARCOLA | 138E | 2023-07-25 | Yes |
| 571-651 | WSNGTNZN17 | 6827 | 2017-07-24 | Yes |
| 571-652 | WSNGTNZN08 | 138E | 2023-07-25 | Yes |
| 571-653 | WSNGTNZN19 | 138E | 2023-07-25 | Yes |
| 571-654 | LEESBURG | 4644 | 2023-08-22 | Yes |
| 571-655 | BRADDOCK | 073H | 2017-03-08 | Yes |
| 571-656 | TRIANGLE | 6855 | 2023-08-31 | Yes |
| 571-657 | MANASSAS | 6855 | 2023-08-31 | Yes |
| 571-658 | WSNGTNZN17 | 4036 | 2023-10-09 | Yes |
| 571-659 | DALE CITY | 318J | 2010-06-10 | Yes |
| 571-660 | TRIANGLE | 138E | 2017-03-14 | Yes |
| 571-661 | WSNGTNZN17 | 6855 | 2023-10-12 | Yes |
| 571-662 | MANASSAS | 6855 | 2018-01-11 | Yes |
| 571-663 | WSNGTNZN19 | 6855 | 2023-10-12 | Yes |
| 571-664 | MANASSAS | 939H | 2024-01-11 | Yes |
| 571-665 | HERNDON | 7229 | 2015-03-10 | Yes |
| 571-666 | WSNGTNZN17 | 138E | 2017-09-28 | Yes |
| 571-667 | LORTON | 138E | 2021-04-14 | Yes |
| 571-668 | WSNGTNZN19 | 138E | 2021-01-22 | Yes |
| 571-669 | WSNGTNZN19 | 197D | 2018-11-27 | Yes |
| 571-670 | WSNGTNZN08 | 939H | 2024-01-11 | Yes |
| 571-671 | ENGLESIDE | 138E | 2024-03-14 | Yes |
| 571-672 | WSNGTNZN17 | 4036 | 2024-03-18 | Yes |
| 571-673 | OCCOQUAN | 138E | 2024-03-25 | Yes |
| 571-674 | BRADDOCK | 138E | 2024-04-17 | Yes |
| 571-675 | WSNGTNZN08 | 4036 | 2024-05-10 | Yes |
| 571-676 | MANASSAS | 515J | 2024-05-31 | Yes |
| 571-677 | DALE CITY | 965H | 2020-07-10 | Yes |
| 571-678 | WSNGTNZN19 | 138E | 2024-06-07 | Yes |
| 571-679 | WSNGTNZN17 | 515J | 2024-06-07 | Yes |
| 571-680 | LEESBURG | 4644 | 2024-07-01 | Yes |
| 571-681 | WSNGTNZN19 | 4036 | 2024-08-20 | Yes |
| 571-682 | WSNGTNZN19 | 6855 | 2024-08-20 | Yes |
| 571-683 | WSNGTNZN17 | 4036 | 2024-09-19 | Yes |
| 571-684 | WSNGTNZN08 | 6827 | 2024-09-25 | Yes |
| 571-685 | HERNDON | 6855 | 2018-09-26 | Yes |
| 571-686 | BRADDOCK | 138E | 2021-06-04 | Yes |
| 571-687 | WSNGTNZN08 | 138E | 2024-09-27 | Yes |
| 571-688 | INDENDNTHL | 516J | 2022-02-18 | Yes |
| 571-689 | WSNGTNZN08 | 6855 | 2024-10-07 | Yes |
| 571-690 | LEESBURG | 4036 | 2024-10-15 | Yes |
| 571-691 | WSNGTNZN17 | 490J | 2024-10-23 | Yes |
| 571-692 | WSNGTNZN17 | 4036 | 2024-11-08 | Yes |
| 571-693 | HERNDON | 4036 | 2024-11-23 | Yes |
| 571-694 | WSNGTNZN17 | 4036 | 2024-11-23 | Yes |
| 571-695 | WSNGTNZN17 | 8825 | 2019-08-13 | Yes |
| 571-696 | ENGLESIDE | 515J | 2024-11-27 | Yes |
| 571-697 | TRIANGLE | 5832 | 2019-03-11 | Yes |
| 571-698 | ARCOLA | 515J | 2024-11-27 | Yes |
| 571-699 | WSNGTNZN08 | 551G | 2013-05-13 | 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.