NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| — | 906-238 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | WATSON | MI |
| — | 906-246 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | FELCH | MI |
| — | 906-255 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | MICHIGMFOR | MI |
| — | 906-272 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | FENCERIVER | MI |
| — | 906-288 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | DONKEN | MI |
| — | 906-438 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | FAITHORN | MI |
| — | 906-493 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | DRUMMONDIS | MI |
| — | 906-544 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | NOLANDOLKS | MI |
| — | 906-548 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | SMOKYLAKES | MI |
| — | 906-595 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | REXTON | MI |
| — | 906-639 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | CARNEY | MI |
| — | 906-654 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | SCOTTPOINT | MI |
| — | 906-787 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | MARENISCO | MI |
| — | 906-788 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | WALLACE | MI |
| — | 906-842 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | LK GOGEBIC | MI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.