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 |
|---|---|---|---|---|---|---|
| 2013-06-18 | 281-662 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | CHANNELVW | TX |
| 2012-10-02 | 281-512 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2007-08-03 | 281-896 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| 2007-06-26 | 281-995 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| 2007-06-22 | 281-865 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| 2006-08-18 | 281-608 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | HUMBLE | TX |
| 2006-05-18 | 281-780 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| 2002-01-24 | 281-330 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| — | 281-300 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-451 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-772 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-773 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-788 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-802 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-804 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-808 | none assigned yet which blocks → | METROPCS, INC. | 5562 | APOLLO | TX |
| — | 281-830 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| — | 281-850 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| — | 281-924 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| — | 281-932 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
| — | 281-960 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HSTNSUBURB | TX |
| — | 281-989 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HOUSTON | TX |
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.