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 |
|---|---|---|---|---|---|---|
| 2009-06-01 | 903-495 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | PARIS | TX |
| 2009-04-16 | 903-708 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | PITTSBURG | TX |
| 2009-03-27 | 903-506 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | TEXARKANA | TX |
| 2008-02-28 | 903-917 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | LONGVIEW | TX |
| 2002-08-05 | 903-449 | 0XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | BONHAM | TX |
| 2002-07-22 | 903-372 | none assigned yet which blocks → | METROPCS, INC. | 5562 | TYLER | TX |
| 2001-01-05 | 903-314 | 3XXX5XXX6XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | NEW BOSTON | TX |
| — | 903-244 | none assigned yet which blocks → | METROPCS, INC. | 5562 | TEXARKANA | TX |
| — | 903-268 | none assigned yet which blocks → | METROPCS, INC. | 5562 | GREENVILLE | TX |
| — | 903-348 | none assigned yet which blocks → | METROPCS, INC. | 5562 | SULPHURSPG | TX |
| — | 903-366 | 0XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | COMMERCE | TX |
| — | 903-445 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LONGVIEW | TX |
| — | 903-493 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | CORSICANA | TX |
| — | 903-624 | 7XXX which blocks → | METROPCS, INC. | 5562 | DENISON | TX |
| — | 903-631 | 0XXX2XXX3XXX5XXX8XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | CARTHAGE | TX |
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.