SPOK, INC.
28 prefixes in 516 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 516-230 | BRENTWOOD | 6630 | — | — |
| 516-245 | NASSAUZN05 | 6630 | 2001-05-09 | — |
| 516-251 | NASSAUZN05 | 6630 | — | — |
| 516-257 | NASSAUZN05 | 6630 | — | — |
| 516-258 | BRENTWOOD | 6630 | — | — |
| 516-275 | BRENTWOOD | 6630 | — | — |
| 516-278 | BRENTWOOD | 6630 | — | — |
| 516-290 | NASSAUZN05 | 6630 | — | — |
| 516-291 | NASSAUZN01 | 6630 | 2001-05-09 | — |
| 516-332 | NASSAUZN05 | 6630 | — | — |
| 516-335 | NASSAUZN05 | 6630 | 2001-05-09 | — |
| 516-339 | BRENTWOOD | 6630 | — | — |
| 516-372 | NASSAUZN05 | 6630 | — | — |
| 516-389 | NASSAUZN05 | 6630 | — | — |
| 516-392 | NASSAUZN05 | 6630 | — | — |
| 516-525 | NASSAUZN01 | 6630 | 2001-05-09 | — |
| 516-638 | NASSAUZN09 | 6630 | — | — |
| 516-645 | NASSAUZN05 | 6630 | — | — |
| 516-648 | NASSAUZN08 | 6630 | — | — |
| 516-649 | NASSAUZN08 | 6630 | — | — |
| 516-657 | NASSAUZN05 | 6630 | — | — |
| 516-793 | NASSAUZN05 | 6630 | — | — |
| 516-839 | NASSAUZN05 | 6630 | — | — |
| 516-891 | NASSAUZN05 | 6630 | — | — |
| 516-947 | NASSAUZN02 | 6630 | 2001-05-09 | — |
| 516-948 | SELDEN | 6630 | — | — |
| 516-954 | NASSAUZN05 | 6630 | — | — |
| 516-975 | NASSAUZN05 | 6630 | 2001-05-09 | — |
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.