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 |
|---|---|---|---|---|---|---|
| 2026-06-15 | 361-393 | 3XXX9XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | ODEM | TX |
| 2020-02-19 | 361-261 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | PORTLDGGRY | TX |
| 2013-07-05 | 361-426 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | ROBSTOWN | TX |
| 2005-03-04 | 361-636 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | FREER | TX |
| 2002-10-02 | 361-799 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | CUERO | TX |
| 2001-09-27 | 361-332 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | ARANSSPASS | TX |
| 2001-09-27 | 361-437 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → | METROPCS, INC. | 5562 | SINTON | TX |
| 2001-09-27 | 361-492 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | METROPCS, INC. | 5562 | GEORGEWEST | TX |
| 2001-09-27 | 361-523 | 0XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | INGLESIDE | TX |
| 2001-09-27 | 361-562 | 0XXX2XXX4XXX5XXX7XXX8XXX which blocks → | METROPCS, INC. | 5562 | ALICE | TX |
| 2001-09-27 | 361-633 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | PORTLDGGRY | TX |
| 2001-09-27 | 361-683 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | MATHIS | TX |
| 2001-09-27 | 361-726 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | ROBSTOWN | TX |
| — | 361-220 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | VICTORIA | TX |
| — | 361-442 | 1XXX2XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | C CHRISTI | TX |
| — | 361-548 | none assigned yet which blocks → | METROPCS, INC. | 5562 | C CHRISTI | TX |
| — | 361-549 | none assigned yet which blocks → | METROPCS, INC. | 5562 | C CHRISTI | TX |
| — | 361-658 | none assigned yet which blocks → | METROPCS, INC. | 5562 | C CHRISTI | 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.