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 |
|---|---|---|---|---|---|---|
| 2011-02-16 | 973-816 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | PASSAIC | NJ |
| 2011-01-26 | 973-861 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | PASSAIC | NJ |
| 2008-06-24 | 973-336 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | NEWARK | NJ |
| 2006-03-24 | 973-891 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | DOVER | NJ |
| 2005-01-20 | 973-991 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | NEWARK | NJ |
| 2001-07-18 | 973-277 | none assigned yet which blocks → | METROPCS, INC. | 5562 | NEWARK | NJ |
| 2001-07-18 | 973-876 | 0XXX2XXX5XXX7XXX8XXX which blocks → | METROPCS, INC. | 5562 | DOVER | NJ |
| 2001-07-18 | 973-885 | none assigned yet which blocks → | METROPCS, INC. | 5562 | LIVINGSTON | NJ |
| 2001-05-16 | 973-930 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PASSAIC | NJ |
| — | 973-332 | none assigned yet which blocks → | METROPCS, INC. | 5562 | NEWARK | NJ |
| — | 973-392 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | NEWARK | NJ |
| — | 973-445 | none assigned yet which blocks → | METROPCS, INC. | 5562 | NEWARK | NJ |
| — | 973-460 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PASSAIC | NJ |
| — | 973-620 | 0–9 XXXall 10 · 6 holders which blocks → | METROPCS, INC. | 5562 | DOVER | NJ |
| — | 973-832 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | MT VIEW | NJ |
| — | 973-851 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PASSAIC | 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.