NumberResearchRecent thousands-block assignments
29 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 551
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-04-12 | 551-348-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LEONIA | NJ |
| 2021-04-12 | 551-651-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | OAKLAND | NJ |
| 2021-04-09 | 551-290-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | KEARNY | NJ |
| 2021-04-09 | 551-317-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DUMONT | NJ |
| 2021-04-09 | 551-355-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ENGLEWOOD | NJ |
| 2021-04-09 | 551-455-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FAIR LAWN | NJ |
| 2021-04-09 | 551-722-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HASBROKHTS | NJ |
| 2021-04-09 | 551-946-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HACKENSACK | NJ |
| 2021-04-07 | 551-288-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLOSTER | NJ |
| 2021-04-07 | 551-316-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CLIFFSIDE | NJ |
| 2021-04-07 | 551-351-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CRAGMERE | NJ |
| 2021-04-07 | 551-388-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BAYONNE | NJ |
| 2021-04-02 | 551-316-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | CLIFFSIDE | NJ |
| 2021-04-02 | 551-842-5XXX | 5000–5999 | Assigned | FRACTEL, LLC | 965H | JERSEYCITY | NJ |
| 2021-03-26 | 551-837-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | HACKENSACK | NJ |
| 2021-03-26 | 551-837-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | HACKENSACK | NJ |
| 2021-03-26 | 551-837-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | HACKENSACK | NJ |
| 2021-03-24 | 551-388-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2021-03-24 | 551-388-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2021-03-24 | 551-388-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2021-03-24 | 551-388-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2021-03-16 | 551-837-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HACKENSACK | NJ |
| 2021-02-10 | 551-288-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2021-02-10 | 551-288-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2021-02-10 | 551-294-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2021-02-10 | 551-294-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2021-02-10 | 551-294-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2021-02-10 | 551-294-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2021-02-10 | 551-317-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2021-02-10 | 551-317-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2021-02-10 | 551-317-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2021-02-10 | 551-317-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2021-02-10 | 551-321-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2021-02-10 | 551-321-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2021-02-10 | 551-348-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2021-02-10 | 551-348-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2021-02-10 | 551-348-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2021-02-10 | 551-348-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2021-02-10 | 551-355-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2021-02-10 | 551-355-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2021-02-10 | 551-355-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2021-02-10 | 551-355-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2021-02-10 | 551-388-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2021-02-10 | 551-388-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2021-02-10 | 551-388-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2021-02-10 | 551-388-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2021-02-10 | 551-455-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2021-02-10 | 551-455-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2021-02-10 | 551-455-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2021-02-10 | 551-455-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.