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23 prefixes in 424 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 424-207 | INGLEWOOD | 899D | 2006-12-11 | Yes |
| 424-214 | SNMN SNMN | 899D | 2007-01-24 | Yes |
| 424-219 | CMTN GRDN | 899D | 2007-03-13 | Yes |
| 424-221 | CMTN GRDN | 899D | 2007-03-19 | Yes |
| 424-222 | LOMITA | 899D | 2007-03-20 | Yes |
| 424-223 | INGLEWOOD | 899D | 2007-03-20 | Yes |
| 424-224 | SAN PEDRO | 899D | 2007-03-21 | Yes |
| 424-228 | SNMN MRVS | 899D | 2007-05-07 | Yes |
| 424-229 | SNMN SNMN | 899D | 2007-05-09 | Yes |
| 424-233 | CMTN GRDN | 899D | 2007-08-24 | Yes |
| 424-235 | MALIBU | 899D | 2007-09-18 | Yes |
| 424-237 | REDONDO | 899D | 2009-01-19 | Yes |
| 424-240 | HAWTHORNE | 899D | 2008-02-22 | Yes |
| 424-246 | CMTN GRDN | 899D | — | Yes |
| 424-249 | BEVERLYHLS | 899D | 2009-02-23 | Yes |
| 424-295 | CMTN GRDN | 899D | 2013-02-15 | Yes |
| 424-310 | HAWTHORNE | 899D | 2017-08-07 | Yes |
| 424-407 | W ANGELES | 899D | 2018-04-16 | Yes |
| 424-413 | SNMN SNMN | 899D | 2018-05-15 | Yes |
| 424-531 | CMTN GRDN | 899D | 2015-04-14 | Yes |
| 424-571 | TORRANCE | 899D | 2009-12-15 | Yes |
| 424-702 | INGLEWOOD | 899D | — | Yes |
| 424-703 | SAN PEDRO | 899D | 2010-01-05 | 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.