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 |
|---|---|---|---|---|---|---|---|
| 2016-02-01 | 551-231-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2016-01-29 | 551-231-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2016-01-28 | 551-248-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2016-01-28 | 551-248-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2016-01-26 | 551-231-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2016-01-26 | 551-243-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2016-01-26 | 551-243-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2016-01-26 | 551-900-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2016-01-26 | 551-900-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2016-01-25 | 551-236-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2016-01-13 | 551-244-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | HACKENSACK | NJ |
| 2016-01-13 | 551-244-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | HACKENSACK | NJ |
| 2016-01-08 | 551-241-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2016-01-08 | 551-241-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2016-01-08 | 551-267-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2016-01-08 | 551-267-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2016-01-08 | 551-267-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2016-01-05 | 551-240-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | UNION CITY | NJ |
| 2015-12-30 | 551-202-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CLIFFSIDE | NJ |
| 2015-12-30 | 551-240-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | UNION CITY | NJ |
| 2015-12-23 | 551-253-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2015-12-22 | 551-214-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2015-11-25 | 551-264-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RAMSEY | NJ |
| 2015-11-13 | 551-253-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2015-11-09 | 551-248-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | CLOSTER | NJ |
| 2015-11-09 | 551-313-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | CLIFFSIDE | NJ |
| 2015-11-09 | 551-888-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | UNION CITY | NJ |
| 2015-11-05 | 551-243-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | FAIR LAWN | NJ |
| 2015-11-05 | 551-245-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | HACKENSACK | NJ |
| 2015-11-05 | 551-245-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | HACKENSACK | NJ |
| 2015-11-05 | 551-245-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | HACKENSACK | NJ |
| 2015-10-14 | 551-248-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CLOSTER | NJ |
| 2015-10-14 | 551-263-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | JERSEYCITY | NJ |
| 2015-10-14 | 551-264-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | RAMSEY | NJ |
| 2015-10-02 | 551-244-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | HACKENSACK | NJ |
| 2015-10-01 | 551-254-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | UNION CITY | NJ |
| 2015-10-01 | 551-264-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | RAMSEY | NJ |
| 2015-09-24 | 551-254-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2015-09-24 | 551-254-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2015-09-24 | 551-777-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2015-09-17 | 551-264-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RAMSEY | NJ |
| 2015-09-11 | 551-263-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | JERSEYCITY | NJ |
| 2015-09-10 | 551-220-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | JERSEYCITY | NJ |
| 2015-09-10 | 551-263-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-09-10 | 551-263-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-09-10 | 551-263-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-09-10 | 551-263-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-09-10 | 551-263-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-09-10 | 551-263-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | JERSEYCITY | NJ |
| 2015-09-09 | 551-241-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | 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.