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 |
|---|---|---|---|---|---|---|
| 2012-04-09 | 215-800 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| 2011-12-23 | 215-251 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| 2011-12-23 | 215-678 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| 2011-04-12 | 215-617 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| 2009-03-05 | 215-303 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN2 | PA |
| 2009-02-06 | 215-954 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN2 | PA |
| 2008-02-14 | 215-626 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN2 | PA |
| 2005-03-29 | 215-207 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| 2002-10-01 | 215-237 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHPHSBZN33 | PA |
| — | 215-397 | 0XXX1XXX2XXX3XXX4XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN2 | PA |
| — | 215-416 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-431 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHPHSBZN40 | PA |
| — | 215-432 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-651 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-668 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-681 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-768 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-778 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-783 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
| — | 215-852 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHLDLPHZN1 | PA |
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.