All assignees
629 prefixes in 401 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 401-200 | BRISTOL | 977E | 2011-01-12 | Yes |
| 401-201 | PROVIDENCE | 490J | 2024-07-25 | Yes |
| 401-202 | XXXXXXXXXX | 9102 | — | — |
| 401-203 | GREENWICH | 6889 | 2002-10-23 | Yes |
| 401-204 | PAWTUCKET | 073H | 2017-05-04 | Yes |
| 401-205 | PAWTUCKET | 318J | 2018-12-19 | Yes |
| 401-206 | W WARWICK | 5562 | 2002-10-23 | Yes |
| 401-207 | NARRAGNSTT | 5562 | 2002-10-23 | Yes |
| 401-208 | PROVIDENCE | 114J | 2019-09-23 | Yes |
| 401-209 | PROVIDENCE | 6389 | 2011-10-04 | Yes |
| 401-210 | BLOCK IS | 977E | — | — |
| 401-211 | XXXXXXXXXX | MULT | — | — |
| 401-212 | HOPEVALLEY | 6889 | — | Yes |
| 401-213 | CAROLINA | 318J | — | Yes |
| 401-214 | PROVIDENCE | 631G | 2014-03-20 | Yes |
| 401-215 | PROVIDENCE | 7351 | — | Yes |
| 401-216 | WOONSOCKET | 7351 | 2004-12-29 | Yes |
| 401-217 | WGLOCESTER | 829J | — | Yes |
| 401-218 | NARRAGNSTT | 829J | — | Yes |
| 401-219 | GREENWICH | 6889 | — | Yes |
| 401-220 | XXXXXXXXXX | 9102 | — | — |
| 401-221 | PROVIDENCE | 6630 | — | — |
| 401-222 | PROVIDENCE | 9102 | — | Yes |
| 401-223 | PROVIDENCE | 829J | — | — |
| 401-224 | PROVIDENCE | 9102 | — | — |
| 401-225 | PROVIDENCE | 4036 | 2001-04-17 | — |
| 401-226 | PROVIDENCE | 6889 | — | Yes |
| 401-227 | SCITUATE | 7229 | — | Yes |
| 401-228 | PROVIDENCE | 7229 | — | Yes |
| 401-229 | WOONSOCKET | 7229 | — | Yes |
| 401-230 | PROVIDENCE | 829J | 2002-08-20 | Yes |
| 401-231 | CENTREDALE | 9102 | — | — |
| 401-232 | CENTREDALE | 9102 | — | Yes |
| 401-233 | CENTREDALE | 9102 | — | Yes |
| 401-234 | GREENWICH | 7229 | — | Yes |
| 401-235 | WOONSOCKET | 9102 | — | Yes |
| 401-236 | NEWPORT | 7351 | — | Yes |
| 401-237 | WARREN | 7351 | — | Yes |
| 401-238 | CAROLINA | 977E | — | — |
| 401-239 | NEWPORT | 4016 | — | Yes |
| 401-240 | BRISTOL | 318J | 2017-11-08 | Yes |
| 401-241 | PROVIDENCE | 6889 | — | — |
| 401-242 | XXXXXXXXXX | 9102 | — | — |
| 401-243 | PROVIDENCE | 9102 | — | Yes |
| 401-244 | WARWICK | 7351 | — | Yes |
| 401-245 | WARREN | 9102 | — | — |
| 401-246 | WARREN | 9102 | — | Yes |
| 401-247 | WARREN | 9102 | — | Yes |
| 401-248 | PROVIDENCE | 7351 | — | Yes |
| 401-249 | COVENTRY | 7229 | — | Yes |
| 401-250 | W WARWICK | 7351 | 2001-10-25 | Yes |
| 401-251 | PORTSMOUTH | 507J | 2016-10-05 | Yes |
| 401-252 | WARREN | 5562 | 2002-10-23 | Yes |
| 401-253 | BRISTOL | 9102 | — | — |
| 401-254 | BRISTOL | 9102 | — | — |
| 401-255 | PROVIDENCE | 6889 | — | Yes |
| 401-256 | PROVIDENCE | 6389 | 2006-12-19 | Yes |
| 401-257 | CUMBLND HL | 829J | — | Yes |
| 401-258 | PROVIDENCE | 6389 | — | — |
| 401-259 | PROVIDENCE | 197D | 2017-12-19 | Yes |
| 401-260 | CENTREDALE | 7351 | 2017-12-28 | Yes |
| 401-261 | PROVIDENCE | 5562 | — | Yes |
| 401-262 | W WARWICK | 7229 | — | Yes |
| 401-263 | PROVIDENCE | 6889 | 2002-08-07 | Yes |
| 401-264 | PORTSMOUTH | 7351 | — | Yes |
| 401-265 | PROVIDENCE | 5562 | — | Yes |
| 401-266 | PORTSMOUTH | 4036 | 2002-07-18 | Yes |
| 401-267 | NO KINGSTN | 9102 | — | Yes |
| 401-268 | NO KINGSTN | 9102 | — | Yes |
| 401-269 | COVENTRY | 5562 | 2002-10-23 | Yes |
| 401-270 | PROVIDENCE | 318J | — | — |
| 401-271 | CENTREDALE | 977E | — | — |
| 401-272 | PROVIDENCE | 9102 | — | — |
| 401-273 | PROVIDENCE | 9102 | — | — |
| 401-274 | PROVIDENCE | 9102 | — | — |
| 401-275 | PROVIDENCE | 9102 | — | Yes |
| 401-276 | PROVIDENCE | 9102 | — | — |
| 401-277 | PROVIDENCE | 9102 | — | — |
| 401-278 | PROVIDENCE | 9102 | — | — |
| 401-279 | COVENTRY | 7351 | — | Yes |
| 401-280 | PROVIDENCE | 6389 | 2011-04-06 | Yes |
| 401-281 | LTLCOMPTON | 7351 | 2001-01-16 | Yes |
| 401-282 | PROVIDENCE | 9102 | — | Yes |
| 401-283 | PROVIDENCE | 4016 | — | Yes |
| 401-284 | NARRAGNSTT | 318J | — | Yes |
| 401-285 | PASCOAG | 4016 | 2001-04-19 | Yes |
| 401-286 | PROVIDENCE | 6889 | — | — |
| 401-287 | WARWICK | 7351 | — | Yes |
| 401-288 | PAWTUCKET | 7351 | — | Yes |
| 401-289 | WARREN | 318J | — | Yes |
| 401-290 | PROVIDENCE | 9102 | — | Yes |
| 401-291 | PROVIDENCE | 425J | 2020-02-19 | Yes |
| 401-292 | CENTREDALE | 7351 | — | — |
| 401-293 | PORTSMOUTH | 318J | — | Yes |
| 401-294 | NO KINGSTN | 9102 | — | — |
| 401-295 | NO KINGSTN | 9102 | — | Yes |
| 401-296 | PROVIDENCE | 836C | 2020-03-31 | Yes |
| 401-297 | BRISTOL | 5562 | 2002-10-23 | Yes |
| 401-298 | WARWICK | 4016 | — | Yes |
| 401-299 | CUMBLND HL | 6889 | 2024-07-30 | 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.