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 |
|---|---|---|---|---|---|---|
| 2025-01-02 | 947-285 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | BIRMINGHAM | MI |
| 2024-05-22 | 947-278 | 0XXX1XXX2XXX3XXX7XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | PONTIAC | MI |
| 2024-03-15 | 947-277 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROYAL OAK | MI |
| 2024-02-21 | 947-275 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | FARMINGTON | MI |
| 2024-02-20 | 947-273 | 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | AUBURN HTS | MI |
| 2024-02-16 | 947-271 | 0XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | HOLLY | MI |
| 2022-08-08 | 947-813 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | NORTHVILLE | MI |
| 2022-03-18 | 947-258 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CLARKSTON | MI |
| 2022-01-10 | 947-243 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | TROY | MI |
| 2021-09-08 | 947-240 | 5XXX6XXX7XXX8XXX9XXX which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | W BLOOMFLD | MI |
| 2021-06-28 | 947-239 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CLARKSTON | MI |
| 2021-05-26 | 947-236 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | ROCHESTER | MI |
| 2020-12-10 | 947-229 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | CLARKSTON | MI |
| 2018-01-11 | 947-205 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | TROY | 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.