All assignees
649 prefixes in 571 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 571-824 | ENGLESIDE | 7529 | 2023-10-19 | Yes |
| 571-825 | LEESBURG | 6855 | 2026-09-10 | Yes |
| 571-830 | WSNGTNZN17 | 318J | 2006-10-23 | Yes |
| 571-831 | LEESBURG | 8825 | — | Yes |
| 571-832 | BRADDOCK | 516J | 2022-02-18 | Yes |
| 571-833 | MANASSAS | 8825 | 2019-03-28 | Yes |
| 571-835 | WSNGTNZN17 | 6827 | 2011-11-21 | Yes |
| 571-837 | LEESBURG | 516J | 2021-02-10 | Yes |
| 571-839 | WSNGTNZN17 | 5562 | 2007-07-30 | Yes |
| 571-842 | WSNGTNZN08 | 5832 | 2019-03-11 | Yes |
| 571-850 | LEESBURG | 6855 | 2026-02-17 | Yes |
| 571-858 | WSNGTNZN08 | 7229 | 2010-11-24 | Yes |
| 571-866 | OCCOQUAN | 516J | 2021-04-06 | Yes |
| 571-867 | WSNGTNZN08 | 939H | 2017-05-19 | Yes |
| 571-870 | LEESBURG | 671J | 2026-07-29 | Yes |
| 571-877 | LORTONMTRO | 965H | 2020-07-27 | Yes |
| 571-882 | WSNGTNZN08 | 6827 | 2008-12-09 | Yes |
| 571-888 | DULLES | 275G | 2013-12-18 | Yes |
| 571-895 | WSNGTNZN08 | 506J | 2020-08-17 | Yes |
| 571-899 | WSNGTNZN17 | 965H | 2020-07-10 | Yes |
| 571-900 | — | — | ||
| 571-901 | ENGLESIDE | 138E | 2020-06-10 | Yes |
| 571-903 | WSNGTNZN08 | 969J | 2026-01-21 | Yes |
| 571-910 | HERNDON | 138E | 2021-04-15 | Yes |
| 571-911 | XXXXXXXXXX | MULT | — | — |
| 571-918 | LEESBURG | 318J | 2006-10-20 | Yes |
| 571-919 | LEESBURG | 6827 | 2014-04-15 | Yes |
| 571-921 | MANASSAS | 0233 | — | Yes |
| 571-926 | HERNDON | 6827 | 2006-09-21 | Yes |
| 571-931 | TRIANGLE | 829J | — | Yes |
| 571-932 | LORTONMTRO | 829J | — | Yes |
| 571-933 | DULLESMTRO | 829J | — | Yes |
| 571-934 | DULLES | 829J | — | Yes |
| 571-936 | WSNGTNZN08 | — | — | |
| 571-946 | MANASSAS | 965H | 2020-07-10 | Yes |
| 571-950 | MULT | — | — | |
| 571-954 | — | — | ||
| 571-958 | MULT | — | — | |
| 571-959 | MULT | — | — | |
| 571-969 | WSNGTNZN08 | 6827 | 2009-03-16 | Yes |
| 571-970 | WSNGTNZN08 | 318J | 2006-01-26 | Yes |
| 571-976 | — | — | ||
| 571-977 | WSNGTNZN08 | 965H | 2020-07-10 | Yes |
| 571-982 | WSNGTNZN08 | 6827 | 2012-10-12 | Yes |
| 571-989 | DALE CITY | 079F | 2010-10-07 | Yes |
| 571-991 | DALE CITY | 5562 | 2006-05-25 | Yes |
| 571-992 | WSNGTNZN19 | 6855 | 2014-11-18 | Yes |
| 571-998 | INDENDNTHL | 138E | 2020-05-08 | Yes |
| 571-999 | WSNGTNZN17 | 138E | 2015-02-17 | 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.