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35 prefixes in 401 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 401-205 | PAWTUCKET | 318J | 2018-12-19 | Yes |
| 401-213 | CAROLINA | 318J | — | Yes |
| 401-240 | BRISTOL | 318J | 2017-11-08 | Yes |
| 401-270 | PROVIDENCE | 318J | — | — |
| 401-284 | NARRAGNSTT | 318J | — | Yes |
| 401-289 | WARREN | 318J | — | Yes |
| 401-293 | PORTSMOUTH | 318J | — | Yes |
| 401-315 | WESTERLY | 318J | — | Yes |
| 401-349 | CENTREDALE | 318J | — | Yes |
| 401-356 | WOONSOCKET | 318J | — | Yes |
| 401-383 | PROVIDENCE | 318J | — | Yes |
| 401-385 | COVENTRY | 318J | — | Yes |
| 401-396 | BRISTOL | 318J | — | Yes |
| 401-398 | GREENWICH | 318J | — | Yes |
| 401-405 | CUMBLND HL | 318J | — | Yes |
| 401-443 | PROVIDENCE | 318J | — | Yes |
| 401-475 | PAWTUCKET | 318J | — | Yes |
| 401-491 | HOPEVALLEY | 318J | — | Yes |
| 401-552 | CAROLINA | 318J | — | Yes |
| 401-560 | JAMESTOWN | 318J | — | Yes |
| 401-584 | WESTERLY | 318J | — | Yes |
| 401-592 | LTLCOMPTON | 318J | — | Yes |
| 401-597 | WOONSOCKET | 318J | — | Yes |
| 401-615 | W WARWICK | 318J | — | Yes |
| 401-619 | NEWPORT | 318J | — | Yes |
| 401-632 | PROVIDENCE | 318J | — | Yes |
| 401-637 | WESTERLY | 318J | — | Yes |
| 401-667 | NO KINGSTN | 318J | — | Yes |
| 401-710 | PASCOAG | 318J | — | Yes |
| 401-714 | PROVIDENCE | 318J | — | Yes |
| 401-753 | PAWTUCKET | 318J | — | Yes |
| 401-764 | SCITUATE | 318J | — | Yes |
| 401-816 | TIVERTON | 318J | — | Yes |
| 401-921 | WARWICK | 318J | — | Yes |
| 401-992 | WGLOCESTER | 318J | — | 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.