NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| 2016-09-22 | 551-276 | 0–9 XXXall 10 · 7 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | RIDGEWOOD | NJ |
| 2016-04-01 | 551-209 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | WYCKOFF | NJ |
| 2015-09-08 | 551-241 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2015-09-08 | 551-263 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-04-16 | 551-254 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2015-02-23 | 551-262 | 0–9 XXXall 10 · 7 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | RAMSEY | NJ |
| 2015-01-21 | 551-246 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | FAIR LAWN | NJ |
| 2014-11-14 | 551-236 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | CLOSTER | NJ |
| 2014-11-14 | 551-257 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2014-10-01 | 551-232 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2002-11-13 | 551-556 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2002-05-06 | 551-221 | 3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2002-04-16 | 551-358 | 3XXX4XXX5XXX7XXX8XXX which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2002-04-16 | 551-404 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | HACKENSACK | NJ |
| 2001-10-18 | 551-804 | 0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | WYCKOFF | NJ |
| 2001-10-17 | 551-587 | 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | HACKENSACK | NJ |
| 2001-10-17 | 551-998 | 2XXX3XXX which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| — | 551-430 | 0–9 XXXall 10 · 6 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| — | 551-432 | not yet reported which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.