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 |
|---|---|---|---|---|---|---|
| 2004-12-06 | 906-244 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CEDARVILLE | MI |
| 2004-12-06 | 906-252 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MANISTIQUE | MI |
| 2004-12-06 | 906-434 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | RUDYARD | MI |
| 2004-12-06 | 906-710 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | DE TOUR | MI |
| 2004-12-06 | 906-717 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | PICKFORD | MI |
| 2003-11-25 | 906-237 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CRYSTALFLS | MI |
| 2001-09-13 | 906-743 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | TROUT LAKE | MI |
| 2001-09-13 | 906-760 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 4632 | REPUBLIC | MI |
| 2001-08-02 | 906-676 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MICHIGAMME | MI |
| — | 906-213 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | BERGLAND | MI |
| — | 906-215 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CURTIS | MI |
| — | 906-217 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | ESCANABA | MI |
| — | 906-218 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | ENGADINE | MI |
| — | 906-234 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MACKINACIS | MI |
| — | 906-302 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | IRON MT | MI |
| — | 906-307 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | IRONWOOD | MI |
| — | 906-308 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | IRON RIVER | MI |
| — | 906-312 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | KEWEENAW | MI |
| — | 906-315 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MARQUETTE | MI |
| — | 906-317 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | MENOMINEE | MI |
| — | 906-321 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | NEWBERRY | MI |
| — | 906-324 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | POWERS | MI |
| — | 906-325 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 4632 | ROCK | MI |
| — | 906-326 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | STEPHENSON | MI |
| — | 906-327 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | SALTSTMARI | MI |
| — | 906-328 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | ST IGNACE | MI |
| — | 906-329 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | WATERSMEET | MI |
| — | 906-696 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | HOUGHTON | 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.