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 |
|---|---|---|---|---|---|---|
| 2003-01-07 | 601-667 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | CANTON | MS |
| 2002-09-10 | 601-609 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | JACKSON | MS |
| 2002-09-10 | 601-610 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | HATTIESBG | MS |
| 2002-05-10 | 601-494 | 2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | WIGGINS | MS |
| 2002-05-10 | 601-566 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | JACKSON | MS |
| 2001-02-28 | 601-473 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | CLINTON | MS |
| 2001-01-31 | 601-451 | 4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | FAYETTE | MS |
| 2001-01-04 | 601-392 | 0XXX2XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | NATCHEZ | MS |
| — | 601-238 | 9XXX which blocks → | METROPCS, INC. | 5562 | JACKSON | MS |
| — | 601-273 | 3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | PICAYUNE | MS |
| — | 601-299 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | HATTIESBG | MS |
| — | 601-301 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | VICKSBURG | MS |
| — | 601-329 | 0XXX2XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | HATTIESBG | MS |
| — | 601-342 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | LAUREL | MS |
| — | 601-365 | 0XXX2XXX7XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | POPLARVL | MS |
| — | 601-434 | 4XXX5XXX7XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | HATTIESBG | MS |
| — | 601-454 | none assigned yet which blocks → | METROPCS, INC. | 5562 | JACKSON | MS |
| — | 601-456 | 0XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | VICKSBURG | MS |
| — | 601-462 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | MERIDIAN | MS |
| — | 601-880 | 0XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | MERIDIAN | MS |
| — | 601-983 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | JACKSON | MS |
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.