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 |
|---|---|---|---|---|---|---|
| 2014-12-30 | 334-600 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | HOLTVILLE | AL |
| 2007-02-08 | 334-450 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | MONTGOMERY | AL |
| 2003-04-08 | 334-391 | none assigned yet which blocks → | METROPCS, INC. | 5562 | MONTGOMERY | AL |
| 2002-12-31 | 334-439 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | TUSKEGEE | AL |
| 2002-05-21 | 334-294 | 0XXX3XXX4XXX5XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | MONTGOMERY | AL |
| 2002-04-22 | 334-268 | 4XXX5XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | TROY | AL |
| 2001-08-24 | 334-799 | none assigned yet which blocks → | METROPCS, INC. | 5562 | MONTGOMERY | AL |
| 2001-01-25 | 334-715 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | MARION | AL |
| 2001-01-25 | 334-717 | 0XXX2XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | PRATTVILLE | AL |
| 2001-01-10 | 334-710 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | LANGDALE | AL |
| — | 334-319 | 5XXX8XXX9XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | OPELIKA | AL |
| — | 334-468 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | PHENIXCITY | AL |
| — | 334-505 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | SELMA | AL |
| — | 334-553 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | SELMA | AL |
| — | 334-561 | 4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | METROPCS, INC. | 5562 | MONTGOMERY | AL |
| — | 334-657 | none assigned yet which blocks → | METROPCS, INC. | 5562 | MONTGOMERY | AL |
| — | 334-947 | 0–9 XXXall 10 · 6 holders which blocks → | METROPCS, INC. | 5562 | PHENIXCITY | AL |
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.