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 |
|---|---|---|---|---|---|---|
| 2017-07-26 | 717-995 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | HERSHEY | PA |
| 2017-01-04 | 717-621 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| 2012-07-23 | 717-316 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | HANOVER | PA |
| 2007-02-20 | 717-425 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | HARISBGZN1 | PA |
| 2006-10-16 | 717-406 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| 2002-06-03 | 717-587 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| 2002-01-18 | 717-398 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | GETTYSBURG | PA |
| 2001-12-14 | 717-443 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HARISBGZN1 | PA |
| 2001-11-09 | 717-222 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | LEBANON | PA |
| — | 717-278 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| — | 717-324 | 4XXX5XXX8XXX9XXX which blocks → | METROPCS, INC. | 5562 | YORK | PA |
| — | 717-342 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | COLUMBIA | PA |
| — | 717-380 | 2XXX which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| — | 717-421 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HARISBGZN1 | PA |
| — | 717-446 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | CHAMBERSBG | PA |
| — | 717-542 | none assigned yet which blocks → | METROPCS, INC. | 5562 | YORK | PA |
| — | 717-554 | none assigned yet which blocks → | METROPCS, INC. | 5562 | HARISBGZN1 | PA |
| — | 717-577 | none assigned yet which blocks → | METROPCS, INC. | 5562 | YORK | PA |
| — | 717-629 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| — | 717-989 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
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.