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 |
|---|---|---|---|---|---|---|
| 2018-10-01 | 914-317 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | WSCHSTZN04 | NY |
| 2018-07-09 | 914-335 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | WSCHSTZN04 | NY |
| 2017-10-26 | 914-252 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | OSSINING | NY |
| 2017-09-21 | 914-247 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | MT VERNON | NY |
| 2011-02-18 | 914-279 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | WSCHSTZN04 | NY |
| 2008-10-29 | 914-258 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | WSCHSTZN04 | NY |
| 2002-10-09 | 914-534 | 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | NORTHSALEM | NY |
| 2002-10-09 | 914-573 | 0XXX4XXX5XXX7XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | WSCHSTZN02 | NY |
| 2002-10-09 | 914-574 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | WSCHSTZN05 | NY |
| 2002-10-09 | 914-575 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | WSCHSTZN06 | NY |
| 2002-06-18 | 914-563 | 0XXX which blocks → | METROPCS, INC. | 5562 | WSCHSTZN03 | NY |
| 2002-06-18 | 914-564 | 0XXX which blocks → | METROPCS, INC. | 5562 | WSCHSTZN04 | NY |
| 2001-08-13 | 914-373 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | OSSINING | NY |
| 2001-03-02 | 914-382 | 0XXX2XXX4XXX5XXX7XXX8XXX which blocks → | METROPCS, INC. | 5562 | PEEKSKILL | NY |
| — | 914-755 | 8XXX which blocks → | METROPCS, INC. | 5562 | NEWBURGH | NY |
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.