All assignees
649 prefixes in 571 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 571-300 | DALE CITY | 5562 | 2017-11-22 | Yes |
| 571-301 | WSNGTNZN19 | 6855 | 2024-11-18 | Yes |
| 571-302 | WSNGTNZN08 | 6827 | 2012-11-16 | Yes |
| 571-303 | WSNGTNZN08 | 7529 | 2007-02-23 | Yes |
| 571-304 | HERNDON | 9213 | 2014-01-28 | Yes |
| 571-305 | WSNGTNZN08 | 6827 | 2010-07-09 | Yes |
| 571-306 | HERNDON | 079F | 2010-02-15 | Yes |
| 571-307 | WSNGTNZN19 | 9213 | 2007-11-30 | Yes |
| 571-308 | WSNGTNZN19 | 318J | 2008-02-01 | Yes |
| 571-309 | WSNGTNZN08 | 4036 | 2006-06-02 | Yes |
| 571-310 | WSNGTNZN19 | 079F | 2018-03-02 | Yes |
| 571-311 | XXXXXXXXXX | MULT | — | — |
| 571-312 | WSNGTNZN08 | 318J | 2006-10-23 | Yes |
| 571-313 | HERNDON | 318J | 2006-09-18 | Yes |
| 571-314 | WSNGTNZN17 | 6855 | 2008-08-18 | Yes |
| 571-315 | HERNDON | 6855 | 2008-03-31 | Yes |
| 571-316 | DALE CITY | 5562 | 2010-09-29 | Yes |
| 571-317 | WSNGTNZN08 | 6827 | — | Yes |
| 571-318 | WSNGTNZN19 | 6827 | 2009-09-09 | Yes |
| 571-319 | WSNGTNZN08 | 318J | 2010-06-07 | Yes |
| 571-320 | TRIANGLE | 6855 | 2016-04-04 | Yes |
| 571-321 | BRADDOCK | 829J | — | Yes |
| 571-322 | ENGLESIDE | 829J | — | Yes |
| 571-323 | HERNDON | 829J | — | — |
| 571-324 | HERNDON | 7229 | 2017-07-31 | Yes |
| 571-325 | HERNDON | 7229 | 2013-12-13 | Yes |
| 571-326 | WSNGTNZN17 | 7229 | 2013-01-21 | Yes |
| 571-327 | WSNGTNZN17 | 5562 | 2008-12-31 | Yes |
| 571-328 | WSNGTNZN19 | 6827 | 2011-11-21 | Yes |
| 571-329 | WSNGTNZN08 | 6827 | 2006-08-30 | Yes |
| 571-330 | DALE CITY | 5562 | — | Yes |
| 571-331 | WSNGTNZN17 | 6855 | — | — |
| 571-332 | WSNGTNZN17 | 6855 | 2001-03-16 | — |
| 571-333 | LEESBURG | 318J | — | — |
| 571-334 | HERNDON | 6827 | 2001-06-08 | — |
| 571-335 | WSNGTNZN17 | 4036 | 2009-11-16 | Yes |
| 571-336 | ENGLESIDE | 5832 | — | Yes |
| 571-337 | WSNGTNZN17 | 6855 | 2008-06-18 | Yes |
| 571-338 | WSNGTNZN17 | 6855 | 2002-07-23 | — |
| 571-339 | ENGLESIDE | 829J | 2002-03-12 | Yes |
| 571-340 | WSNGTNZN19 | 6827 | 2008-04-10 | Yes |
| 571-341 | WSNGTNZN17 | 8825 | — | Yes |
| 571-342 | HERNDON | 6827 | 2015-01-06 | Yes |
| 571-343 | OCCOQUAN | 8825 | 2013-12-13 | Yes |
| 571-344 | WSNGTNZN08 | 9213 | 2002-03-27 | Yes |
| 571-345 | WSNGTNZN08 | 9213 | 2002-03-27 | Yes |
| 571-346 | HERNDON | 6827 | 2009-01-12 | Yes |
| 571-347 | WSNGTNZN08 | 8825 | 2018-05-30 | Yes |
| 571-348 | LORTON | 079F | 2012-12-26 | Yes |
| 571-349 | ARCOLA | 0233 | 2014-09-25 | Yes |
| 571-350 | WSNGTNZN19 | 138E | 2007-10-09 | Yes |
| 571-351 | WSNGTNZN08 | 6827 | 2014-07-01 | Yes |
| 571-352 | HERNDON | 4036 | 2015-08-25 | Yes |
| 571-353 | HERNDON | 6827 | 2011-11-21 | Yes |
| 571-354 | WSNGTNZN19 | 7529 | 2008-11-13 | Yes |
| 571-355 | WSNGTNZN17 | 4036 | 2010-08-25 | Yes |
| 571-356 | WSNGTNZN17 | 6855 | 2010-11-23 | Yes |
| 571-357 | WSNGTNZN08 | 6827 | 2009-02-10 | Yes |
| 571-358 | MANASSAS | 318J | 2010-09-23 | Yes |
| 571-359 | MANASSAS | 6827 | 2011-08-12 | Yes |
| 571-360 | INDENDNTHL | 5832 | 2018-06-26 | Yes |
| 571-361 | MANASSAS | 7229 | 2017-08-02 | Yes |
| 571-362 | HERNDON | 7229 | 2017-09-18 | Yes |
| 571-363 | WSNGTNZN19 | 4036 | 2015-06-10 | Yes |
| 571-364 | MANASSAS | 4036 | 2012-12-24 | Yes |
| 571-365 | BRADDOCK | 5562 | 2015-03-09 | Yes |
| 571-366 | WSNGTNZN08 | 4036 | 2006-08-14 | Yes |
| 571-367 | ARCOLA | 0233 | 2011-09-15 | Yes |
| 571-368 | DALE CITY | 5562 | 2016-12-29 | Yes |
| 571-369 | WSNGTNZN17 | 6827 | 2017-04-10 | Yes |
| 571-370 | ARCOLA | 5832 | 2018-06-26 | Yes |
| 571-371 | WSNGTNZN08 | 829J | 2016-09-26 | Yes |
| 571-372 | WSNGTNZN08 | 9213 | 2010-11-24 | Yes |
| 571-373 | WSNGTNZN19 | 6855 | 2016-01-12 | Yes |
| 571-374 | INDENDNTHL | 367E | 2006-11-17 | Yes |
| 571-375 | HERNDON | 7229 | 2012-06-13 | Yes |
| 571-376 | HERNDON | 6855 | — | Yes |
| 571-377 | MANASSAS | 367E | 2008-08-18 | Yes |
| 571-378 | WSNGTNZN17 | 6855 | 2017-09-01 | Yes |
| 571-379 | MANASSAS | 318J | 2006-01-26 | Yes |
| 571-380 | LORTON | 5832 | 2018-06-26 | Yes |
| 571-381 | WSNGTNZN08 | 4036 | 2024-02-16 | Yes |
| 571-382 | WSNGTNZN17 | 7229 | — | Yes |
| 571-383 | MANASSAS | 7229 | 2011-08-22 | Yes |
| 571-384 | WSNGTNZN08 | 6827 | 2007-10-29 | Yes |
| 571-385 | WSNGTNZN17 | 079F | 2011-09-01 | Yes |
| 571-386 | WSNGTNZN19 | 7229 | 2012-11-20 | Yes |
| 571-387 | HERNDON | 7229 | 2018-06-01 | Yes |
| 571-388 | WSNGTNZN08 | 8825 | 2011-05-10 | Yes |
| 571-389 | WSNGTNZN17 | 6827 | 2010-08-16 | Yes |
| 571-390 | NOKESVILLE | 5832 | 2018-06-26 | Yes |
| 571-391 | WSNGTNZN19 | 7529 | 2018-06-08 | Yes |
| 571-392 | HERNDON | 7229 | 2011-09-12 | Yes |
| 571-393 | MANASSAS | 4036 | 2009-12-14 | Yes |
| 571-394 | TRIANGLE | 5562 | 2018-07-05 | Yes |
| 571-395 | WSNGTNZN17 | 318J | 2012-11-19 | Yes |
| 571-396 | WSNGTNZN19 | 079F | 2018-09-24 | Yes |
| 571-397 | WSNGTNZN08 | 6855 | 2018-09-26 | Yes |
| 571-398 | OCCOQUAN | 6855 | 2012-08-13 | Yes |
| 571-399 | INDENDNTHL | 367E | 2009-02-02 | 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.