NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 907-224 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | SEWARD | AK |
| — | 907-383 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | SAND POINT | AK |
| — | 907-454 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | PORT LIONS | AK |
| — | 907-497 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | KING COVE | AK |
| — | 907-532 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | COLD BAY | AK |
| — | 907-571 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | ILIAMNA | AK |
| — | 907-581 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | UNALASKA | AK |
| — | 907-595 | 7XXX which blocks → | INTERIOR TEL. CO., INC. | 3011 | COOPER LDG | AK |
| — | 907-656 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | GALENA | AK |
| — | 907-662 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | FORT YUKON | AK |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.