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 |
|---|---|---|---|---|---|---|---|
| 2020-06-05 | 551-266-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2020-06-05 | 551-266-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2020-06-01 | 551-501-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2020-06-01 | 551-501-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2020-06-01 | 551-501-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2020-05-28 | 551-292-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | KEARNY | NJ |
| 2020-05-28 | 551-304-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | RUTHERFORD | NJ |
| 2020-05-28 | 551-306-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | UNION CITY | NJ |
| 2020-05-27 | 551-345-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | HASBROKHTS | NJ |
| 2020-05-26 | 551-336-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2020-05-26 | 551-336-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2020-05-26 | 551-336-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2020-05-26 | 551-356-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2020-05-26 | 551-356-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2020-05-26 | 551-356-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2020-05-26 | 551-600-0XXX | 0000–0999 | Assigned | FRACTEL, LLC | 965H | WYCKOFF | NJ |
| 2020-05-26 | 551-600-6XXX | 6000–6999 | Assigned | FRACTEL, LLC | 965H | WYCKOFF | NJ |
| 2020-04-29 | 551-221-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | BAYONNE | NJ |
| 2020-04-29 | 551-282-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | WESTWOOD | NJ |
| 2020-04-29 | 551-282-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | WESTWOOD | NJ |
| 2020-04-29 | 551-282-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | WESTWOOD | NJ |
| 2020-04-29 | 551-292-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | KEARNY | NJ |
| 2020-04-29 | 551-297-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BAYONNE | NJ |
| 2020-04-29 | 551-336-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | HACKENSACK | NJ |
| 2020-04-28 | 551-266-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | FAIR LAWN | NJ |
| 2020-04-28 | 551-266-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | FAIR LAWN | NJ |
| 2020-04-28 | 551-304-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | RUTHERFORD | NJ |
| 2020-04-28 | 551-304-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RUTHERFORD | NJ |
| 2020-04-28 | 551-336-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HACKENSACK | NJ |
| 2020-04-28 | 551-356-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | KEARNY | NJ |
| 2020-04-28 | 551-356-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | KEARNY | NJ |
| 2020-04-28 | 551-465-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | LEONIA | NJ |
| 2020-04-28 | 551-465-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LEONIA | NJ |
| 2020-04-28 | 551-529-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | UNION CITY | NJ |
| 2020-04-28 | 551-529-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | UNION CITY | NJ |
| 2020-04-28 | 551-557-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | PARK RIDGE | NJ |
| 2020-04-28 | 551-758-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | JERSEYCITY | NJ |
| 2020-04-28 | 551-758-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | JERSEYCITY | NJ |
| 2020-04-14 | 551-297-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | BAYONNE | NJ |
| 2020-04-14 | 551-297-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | BAYONNE | NJ |
| 2020-04-07 | 551-554-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2020-04-07 | 551-758-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2020-04-07 | 551-758-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2020-04-01 | 551-465-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2020-04-01 | 551-465-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2020-03-30 | 551-278-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | ORADELL | NJ |
| 2020-03-19 | 551-306-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | UNION CITY | NJ |
| 2020-02-21 | 551-287-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2020-02-21 | 551-293-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2020-02-21 | 551-293-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | 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.