All assignees
649 prefixes in 571 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 571-200 | WSNGTNZN08 | 138E | 2015-11-19 | Yes |
| 571-201 | WSNGTNZN19 | 6855 | — | Yes |
| 571-202 | HERNDON | 6827 | 2023-09-12 | Yes |
| 571-203 | HERNDON | 9213 | — | — |
| 571-204 | WSNGTNZN19 | 9213 | 2004-12-21 | Yes |
| 571-205 | WSNGTNZN17 | 6827 | 2006-11-15 | Yes |
| 571-206 | LEESBURG | 318J | — | Yes |
| 571-207 | LEESBURG | 367E | 2009-08-14 | Yes |
| 571-208 | MANASSAS | 318J | 2007-04-17 | Yes |
| 571-209 | LEESBURG | 829J | 2005-03-01 | Yes |
| 571-210 | ARCOLA | 079F | 2010-10-01 | Yes |
| 571-211 | XXXXXXXXXX | MULT | — | — |
| 571-212 | WSNGTNZN08 | 4036 | — | — |
| 571-213 | WSNGTNZN08 | 4036 | — | — |
| 571-214 | WSNGTNZN08 | 4036 | — | — |
| 571-215 | WSNGTNZN08 | 4036 | — | — |
| 571-216 | WSNGTNZN08 | 4036 | — | — |
| 571-217 | WSNGTNZN08 | 4036 | 2001-01-19 | — |
| 571-218 | WSNGTNZN08 | 9213 | — | Yes |
| 571-219 | WSNGTNZN08 | 6630 | — | — |
| 571-220 | WSNGTNZN08 | 6855 | — | Yes |
| 571-221 | WSNGTNZN17 | 5562 | 2002-09-04 | Yes |
| 571-222 | HAYMARKET | 8825 | 2001-05-23 | Yes |
| 571-223 | LEESBURG | 9213 | 2002-03-26 | Yes |
| 571-224 | WSNGTNZN19 | 6855 | — | Yes |
| 571-225 | WSNGTNZN08 | 4036 | — | Yes |
| 571-226 | WSNGTNZN17 | 9213 | — | Yes |
| 571-227 | WSNGTNZN08 | 7529 | — | — |
| 571-228 | WSNGTNZN08 | 4036 | 2001-06-12 | — |
| 571-229 | MANASSAS | 829J | 2004-05-27 | Yes |
| 571-230 | WSNGTNZN17 | 4036 | 2005-12-27 | Yes |
| 571-231 | WSNGTNZN08 | 9213 | 2010-04-30 | Yes |
| 571-232 | WSNGTNZN08 | 4036 | 2001-01-17 | Yes |
| 571-233 | LEESBURG | 5562 | 2001-01-22 | Yes |
| 571-234 | WSNGTNZN19 | 6855 | — | Yes |
| 571-235 | WSNGTNZN17 | 6855 | 2001-02-06 | Yes |
| 571-236 | WSNGTNZN08 | 4036 | 2001-02-12 | — |
| 571-237 | WSNGTNZN08 | 6855 | 2001-02-22 | Yes |
| 571-238 | WSNGTNZN17 | 5562 | 2001-02-22 | Yes |
| 571-239 | WSNGTNZN08 | 4036 | 2001-04-04 | — |
| 571-240 | HERNDON | 4036 | 2023-09-12 | Yes |
| 571-241 | WSNGTNZN17 | 6855 | 2001-05-15 | Yes |
| 571-242 | WSNGTNZN08 | 4036 | 2001-05-18 | Yes |
| 571-243 | WSNGTNZN08 | 4036 | 2001-09-17 | — |
| 571-244 | WSNGTNZN17 | 6855 | 2001-06-12 | Yes |
| 571-245 | WSNGTNZN17 | 6855 | 2001-07-13 | Yes |
| 571-246 | LEESBURG | 5562 | 2001-06-25 | Yes |
| 571-247 | MANASSAS | 4036 | 2001-06-25 | Yes |
| 571-248 | HAYMARKET | 0233 | 2002-02-07 | Yes |
| 571-249 | WSNGTNZN17 | 6827 | 2009-07-10 | Yes |
| 571-250 | HERNDON | 6855 | 2009-06-12 | Yes |
| 571-251 | WSNGTNZN17 | 6855 | 2001-10-09 | Yes |
| 571-252 | LEESBURG | 9213 | 2005-03-16 | Yes |
| 571-253 | WSNGTNZN17 | 5562 | 2013-07-16 | Yes |
| 571-254 | TRIANGLE | 8825 | 2011-12-05 | Yes |
| 571-255 | WSNGTNZN08 | 6827 | 2008-11-13 | Yes |
| 571-256 | WSNGTNZN08 | 9213 | 2008-10-21 | Yes |
| 571-257 | WSNGTNZN08 | 318J | 2007-07-03 | Yes |
| 571-258 | LEESBURG | 9213 | 2002-03-12 | Yes |
| 571-259 | WSNGTNZN08 | 6855 | 2002-08-13 | Yes |
| 571-260 | DALE CITY | 8825 | 2016-06-09 | Yes |
| 571-261 | HAYMARKET | 0233 | 2002-05-15 | Yes |
| 571-262 | HERNDON | 7229 | 2002-03-18 | Yes |
| 571-263 | WSNGTNZN17 | 6855 | 2002-01-16 | Yes |
| 571-264 | DALE CITY | 5562 | 2002-10-02 | Yes |
| 571-265 | WSNGTNZN17 | 4036 | 2003-05-15 | Yes |
| 571-266 | HERNDON | 7229 | 2008-05-29 | Yes |
| 571-267 | HERNDON | 6855 | — | Yes |
| 571-268 | WSNGTNZN17 | 5562 | 2007-04-24 | Yes |
| 571-269 | WSNGTNZN17 | 5562 | 2008-09-09 | Yes |
| 571-270 | WSNGTNZN08 | 9213 | 2005-07-25 | — |
| 571-271 | LEESBURG | 5832 | 2004-09-20 | Yes |
| 571-272 | WSNGTNZN08 | 9213 | 2002-10-25 | — |
| 571-273 | WSNGTNZN08 | 9213 | 2002-10-25 | — |
| 571-274 | WSNGTNZN08 | 6855 | 2002-09-09 | Yes |
| 571-275 | WSNGTNZN08 | 6855 | 2001-03-09 | — |
| 571-276 | WSNGTNZN08 | 6855 | 2001-03-09 | — |
| 571-277 | WSNGTNZN08 | 6855 | — | — |
| 571-278 | WSNGTNZN19 | 6855 | — | — |
| 571-279 | WSNGTNZN19 | 6855 | 2013-10-24 | Yes |
| 571-280 | WSNGTNZN19 | 9213 | 2003-04-02 | Yes |
| 571-281 | BRADDOCK | 8825 | — | Yes |
| 571-282 | WSNGTNZN17 | 829J | 2007-03-28 | Yes |
| 571-283 | HERNDON | 6855 | — | Yes |
| 571-284 | HAYMARKET | 0233 | 2013-08-29 | Yes |
| 571-285 | DALE CITY | 5562 | 2007-03-15 | Yes |
| 571-286 | WSNGTNZN17 | 4036 | 2008-08-18 | Yes |
| 571-287 | HERNDON | 6827 | 2008-04-15 | Yes |
| 571-288 | DALE CITY | 5562 | 2006-10-11 | Yes |
| 571-289 | WSNGTNZN08 | 6827 | 2007-04-19 | Yes |
| 571-290 | WSNGTNZN08 | 138E | 2014-04-17 | Yes |
| 571-291 | LEESBURG | 8825 | 2005-05-24 | Yes |
| 571-292 | MANASSAS | 829J | 2005-03-23 | Yes |
| 571-293 | LEESBURG | 7229 | 2009-05-12 | Yes |
| 571-294 | WSNGTNZN17 | 4036 | 2007-11-07 | Yes |
| 571-295 | WSNGTNZN19 | 6855 | 2008-06-24 | Yes |
| 571-296 | WSNGTNZN17 | 4036 | 2007-10-02 | Yes |
| 571-297 | WSNGTNZN17 | 8825 | 2007-08-09 | Yes |
| 571-298 | DALE CITY | 5562 | 2012-02-10 | Yes |
| 571-299 | HERNDON | 829J | 2008-03-26 | 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.