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 |
|---|---|---|---|---|---|---|---|
| 2025-05-20 | 551-423-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2025-05-20 | 551-423-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2025-05-13 | 551-410-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIDGEWOOD | NJ |
| 2025-05-01 | 551-417-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | JERSEYCITY | NJ |
| 2025-04-28 | 551-422-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2025-04-28 | 551-422-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2025-04-28 | 551-422-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2025-04-18 | 551-391-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | TEANECK | NJ |
| 2025-04-16 | 551-380-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | RUTHERFORD | NJ |
| 2025-04-16 | 551-398-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | WESTWOOD | NJ |
| 2025-04-16 | 551-398-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | WESTWOOD | NJ |
| 2025-04-16 | 551-415-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2025-04-16 | 551-421-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2025-04-16 | 551-421-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2025-04-16 | 551-421-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2025-04-16 | 551-422-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2025-04-16 | 551-766-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | RUTHERFORD | NJ |
| 2025-04-15 | 551-406-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2025-04-09 | 551-419-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2025-04-08 | 551-406-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | CLOSTER | NJ |
| 2025-04-08 | 551-417-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | JERSEYCITY | NJ |
| 2025-04-08 | 551-417-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | JERSEYCITY | NJ |
| 2025-04-03 | 551-417-9XXX | 9000–9999 | Assigned | CSC WIRELESS, LLC | 425J | JERSEYCITY | NJ |
| 2025-04-03 | 551-420-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2025-04-03 | 551-420-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2025-04-03 | 551-420-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2025-04-03 | 551-420-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2025-04-03 | 551-420-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2025-04-03 | 551-420-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | BAYONNE | NJ |
| 2025-04-03 | 551-421-3XXX | 3000–3999 | Assigned | CABLEVISION LIGHTPATH, INC. - NJ | 4948 | UNION CITY | NJ |
| 2025-04-03 | 551-421-4XXX | 4000–4999 | Assigned | CABLEVISION LIGHTPATH, INC. - NJ | 4948 | UNION CITY | NJ |
| 2025-03-20 | 551-390-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2025-03-20 | 551-390-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2025-03-20 | 551-391-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | TEANECK | NJ |
| 2025-03-20 | 551-391-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | TEANECK | NJ |
| 2025-03-20 | 551-406-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2025-03-20 | 551-410-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2025-03-20 | 551-410-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2025-03-20 | 551-413-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2025-03-20 | 551-415-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2025-03-14 | 551-419-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | FAIR LAWN | NJ |
| 2025-03-14 | 551-419-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | FAIR LAWN | NJ |
| 2025-03-13 | 551-234-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2025-03-13 | 551-379-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2025-03-13 | 551-403-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2025-03-13 | 551-403-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2025-03-13 | 551-412-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2025-03-13 | 551-412-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2025-03-13 | 551-412-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2025-03-11 | 551-408-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | DUMONT | 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.