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 |
|---|---|---|---|---|---|---|---|
| 2021-08-19 | 551-815-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RIDGEWOOD | NJ |
| 2021-08-16 | 551-323-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | UNION CITY | NJ |
| 2021-08-16 | 551-325-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2021-08-16 | 551-325-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2021-08-13 | 551-899-9XXX | 9000–9999 | Assigned | FRACTEL, LLC | 965H | HASBROKHTS | NJ |
| 2021-08-12 | 551-315-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | RAMSEY | NJ |
| 2021-08-12 | 551-315-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | RAMSEY | NJ |
| 2021-08-12 | 551-315-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | RAMSEY | NJ |
| 2021-08-11 | 551-755-5XXX | 5000–5999 | Assigned | FRACTEL, LLC | 965H | CLOSTER | NJ |
| 2021-08-11 | 551-955-5XXX | 5000–5999 | Assigned | FRACTEL, LLC | 965H | WYCKOFF | NJ |
| 2021-08-10 | 551-323-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | UNION CITY | NJ |
| 2021-08-10 | 551-323-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | UNION CITY | NJ |
| 2021-08-10 | 551-323-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | UNION CITY | NJ |
| 2021-07-28 | 551-355-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | ENGLEWOOD | NJ |
| 2021-07-28 | 551-355-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | ENGLEWOOD | NJ |
| 2021-07-27 | 551-325-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-27 | 551-325-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-27 | 551-325-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-27 | 551-325-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-27 | 551-325-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-26 | 551-842-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-26 | 551-842-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2021-07-21 | 551-324-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | WESTWOOD | NJ |
| 2021-07-19 | 551-308-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | RAMSEY | NJ |
| 2021-07-19 | 551-308-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | RAMSEY | NJ |
| 2021-07-01 | 551-751-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | WESTWOOD | NJ |
| 2021-07-01 | 551-751-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | WESTWOOD | NJ |
| 2021-06-30 | 551-323-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2021-06-30 | 551-323-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2021-06-30 | 551-786-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2021-06-30 | 551-786-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2021-06-30 | 551-786-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2021-06-25 | 551-600-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | WYCKOFF | NJ |
| 2021-06-23 | 551-322-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | TEANECK | NJ |
| 2021-06-23 | 551-322-6XXX | 6000–6999 | Assigned | VONAGE AMERICA LLC | 197D | TEANECK | NJ |
| 2021-06-17 | 551-317-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | DUMONT | NJ |
| 2021-06-16 | 551-600-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | WYCKOFF | NJ |
| 2021-06-15 | 551-279-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2021-06-15 | 551-279-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2021-06-15 | 551-288-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2021-06-15 | 551-316-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2021-06-15 | 551-316-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2021-06-15 | 551-317-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2021-06-15 | 551-317-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2021-06-15 | 551-321-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2021-06-15 | 551-321-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2021-06-15 | 551-345-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | HASBROKHTS | NJ |
| 2021-06-15 | 551-348-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2021-06-15 | 551-348-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2021-06-15 | 551-381-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | RUTHERFORD | 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.