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 |
|---|---|---|---|---|---|---|
| 2017-03-09 | 856-443 | 0–9 XXXall 10 · 6 holders which blocks → | METROPCS, INC. | 5562 | WOODBURY | NJ |
| 2011-06-17 | 856-238 | 0–9 XXXall 10 · 6 holders which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| 2010-12-22 | 856-200 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| 2008-02-19 | 856-254 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | MERCHANTVL | NJ |
| 2002-10-08 | 856-466 | none assigned yet which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| 2002-05-06 | 856-498 | none assigned yet which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| 2001-06-13 | 856-297 | none assigned yet which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| — | 856-207 | none assigned yet which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| — | 856-373 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | BLACKWOOD | NJ |
| — | 856-378 | 0–9 XXXall 10 · 6 holders which blocks → | METROPCS, INC. | 5562 | BRIDGETON | NJ |
| — | 856-729 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | CAMDEN | NJ |
| — | 856-870 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | CAMDEN | NJ |
| — | 856-982 | none assigned yet which blocks → | METROPCS, INC. | 5562 | VINELAND | NJ |
| — | 856-993 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | CAMDEN | NJ |
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.