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35 prefixes in 781 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 781-281 | WOBURN | 318J | — | Yes |
| 781-365 | BURLINGTON | 318J | — | Yes |
| 781-369 | WINCHESTER | 318J | — | Yes |
| 781-373 | WALTHAM | 318J | — | Yes |
| 781-374 | HINGHAM | 318J | — | Yes |
| 781-378 | SCITUATE | 318J | — | Yes |
| 781-400 | NEEDHAM | 318J | — | Yes |
| 781-435 | STONEHAM | 318J | — | Yes |
| 781-523 | WHITMAN | 318J | — | Yes |
| 781-558 | SAUGUS | 318J | — | Yes |
| 781-562 | CANTON | 318J | — | Yes |
| 781-587 | WAKEFIELD | 318J | — | Yes |
| 781-605 | MALDEN | 318J | — | Yes |
| 781-609 | WALTHAM | 318J | 2001-02-22 | Yes |
| 781-620 | MELROSE | 318J | — | Yes |
| 781-629 | REVERE | 318J | — | Yes |
| 781-675 | NEEDHAM | 318J | — | Yes |
| 781-686 | DEDHAM | 318J | — | Yes |
| 781-701 | WALTHAM | 318J | — | Yes |
| 781-772 | WELLESLEY | 318J | — | Yes |
| 781-773 | HULL | 318J | — | Yes |
| 781-777 | ARLINGTON | 318J | — | Yes |
| 781-779 | READING | 318J | — | Yes |
| 781-790 | WALTHAM | 318J | — | Yes |
| 781-806 | SHARON | 318J | 2001-09-05 | Yes |
| 781-807 | RANDOLPH | 318J | — | Yes |
| 781-812 | WEYMOUTH | 318J | — | Yes |
| 781-842 | LYNN | 318J | — | — |
| 781-874 | MEDFORD | 318J | — | Yes |
| 781-875 | HINGHAM | 318J | — | Yes |
| 781-885 | RANDOLPH | 318J | — | Yes |
| 781-923 | COHASSET | 318J | — | Yes |
| 781-924 | HANOVER | 318J | — | Yes |
| 781-987 | NORWELL | 318J | — | Yes |
| 781-990 | MARBLEHEAD | 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.