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 |
|---|---|---|---|---|---|---|
| 2001-11-15 | 989-926 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | MIDLAND | MI |
| — | 989-201 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-212 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-222 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-258 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-276 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-384 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-396 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | CLARE | MI |
| — | 989-405 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | FREELAND | MI |
| — | 989-434 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | BAD AXE | MI |
| — | 989-440 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | CLARE | MI |
| — | 989-478 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRAYLING | MI |
| — | 989-489 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | OSCODA | MI |
| — | 989-490 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | GAYLORD | MI |
| — | 989-603 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | ALPENA | MI |
| — | 989-610 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-612 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | MTPLEASANT | MI |
| — | 989-722 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | BAD AXE | MI |
| — | 989-730 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-744 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | OWOSSO | MI |
| — | 989-920 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | SAGINAW | MI |
| — | 989-924 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | ALMA | MI |
| — | 989-929 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | BAY CITY | MI |
| — | 989-979 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | ST JOHNS | MI |
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.