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13 prefixes in 253 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 253-215 | ROY | 318J | 2005-02-18 | Yes |
| 253-267 | TACOMA | 318J | 2003-02-04 | Yes |
| 253-268 | PUYALLUP | 318J | 2003-02-04 | Yes |
| 253-271 | GRAHAM | 318J | 2003-02-04 | Yes |
| 253-277 | KENT | 318J | 2003-02-04 | Yes |
| 253-292 | TACOMA | 318J | 2007-05-03 | Yes |
| 253-294 | AUBURN | 318J | 2019-02-15 | Yes |
| 253-301 | TACOMA | 318J | 2007-01-04 | Yes |
| 253-303 | GIG HARBOR | 318J | — | Yes |
| 253-313 | GIG HARBOR | 318J | — | Yes |
| 253-509 | GIG HARBOR | 318J | — | Yes |
| 253-649 | GIG HARBOR | 318J | — | Yes |
| 253-750 | SUMNER | 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.