SPOK, INC.
22 prefixes in 503 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 503-202 | PORTLAND | 6630 | — | — |
| 503-204 | PORTLAND | 6630 | — | — |
| 503-237 | PORTLAND | 6630 | — | — |
| 503-271 | PORTLAND | 6630 | — | — |
| 503-301 | PORTLAND | 6630 | — | — |
| 503-514 | PORTLAND | 6630 | — | — |
| 503-527 | PORTLAND | 6630 | — | — |
| 503-529 | PORTLAND | 6630 | — | — |
| 503-599 | PORTLAND | 6630 | — | — |
| 503-604 | PORTLAND | 6630 | — | — |
| 503-817 | PORTLAND | 6630 | — | — |
| 503-818 | PORTLAND | 6630 | — | — |
| 503-870 | PORTLAND | 6630 | — | — |
| 503-903 | PORTLAND | 6630 | — | — |
| 503-904 | PORTLAND | 6630 | — | — |
| 503-920 | PORTLAND | 6630 | — | — |
| 503-921 | PORTLAND | 6630 | — | — |
| 503-938 | PORTLAND | 6630 | — | — |
| 503-940 | PORTLAND | 6630 | — | — |
| 503-942 | PORTLAND | 6630 | — | — |
| 503-955 | PORTLAND | 6630 | — | — |
| 503-993 | PORTLAND | 6630 | — | — |
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.