NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| 2022-04-15 | 434-301 | 8XXX9XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | BACHESHALL | VA |
| 2021-12-29 | 434-323 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | SO BOSTON | VA |
| 2021-10-13 | 434-506 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | METROPCS, INC. | 5562 | EMPORIA | VA |
| 2021-05-05 | 434-279 | 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | GLADYS | VA |
| 2007-03-29 | 434-272 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | METROPCS, INC. | 5562 | SO BOSTON | VA |
| 2005-08-03 | 434-305 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | CHARLOTSVL | VA |
| 2002-07-23 | 434-378 | 8XXX which blocks → | METROPCS, INC. | 5562 | EMPORIA | VA |
| 2001-07-02 | 434-607 | 0XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | FARMVILLE | VA |
| 2001-03-27 | 434-444 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LYNCHBURG | VA |
| 2001-03-27 | 434-728 | none assigned yet which blocks → | METROPCS, INC. | 5562 | DANVILLE | VA |
| — | 434-401 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LYNCHBURG | VA |
| — | 434-420 | 0XXX6XXX which blocks → | METROPCS, INC. | 5562 | LYNCHBURG | VA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.