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 |
|---|---|---|---|---|---|---|---|
| 2019-05-14 | 551-370-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIDGEWOOD | NJ |
| 2019-05-02 | 551-282-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | WESTWOOD | NJ |
| 2019-05-02 | 551-340-7XXX | 7000–7999 | Assigned | CSC WIRELESS, LLC | 425J | HACKENSACK | NJ |
| 2019-04-26 | 551-301-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RUTHERFORD | NJ |
| 2019-04-24 | 551-299-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | FAIR LAWN | NJ |
| 2019-04-17 | 551-298-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | JERSEYCITY | NJ |
| 2019-04-17 | 551-298-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | JERSEYCITY | NJ |
| 2019-04-17 | 551-302-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HACKENSACK | NJ |
| 2019-04-16 | 551-308-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | RAMSEY | NJ |
| 2019-04-11 | 551-340-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | HACKENSACK | NJ |
| 2019-04-08 | 551-210-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2019-04-08 | 551-210-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2019-04-08 | 551-270-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2019-04-08 | 551-278-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | ORADELL | NJ |
| 2019-04-08 | 551-278-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | ORADELL | NJ |
| 2019-04-08 | 551-282-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | WESTWOOD | NJ |
| 2019-04-08 | 551-282-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | WESTWOOD | NJ |
| 2019-04-08 | 551-292-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2019-04-08 | 551-292-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2019-04-08 | 551-296-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2019-04-08 | 551-296-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2019-04-08 | 551-299-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2019-04-08 | 551-299-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | FAIR LAWN | NJ |
| 2019-04-08 | 551-308-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2019-04-08 | 551-314-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2019-04-08 | 551-314-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2019-04-08 | 551-319-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | WYCKOFF | NJ |
| 2019-04-08 | 551-319-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | WYCKOFF | NJ |
| 2019-04-08 | 551-370-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2019-04-08 | 551-370-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2019-04-08 | 551-557-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2019-04-08 | 551-557-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2019-04-05 | 551-212-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | TEANECK | NJ |
| 2019-04-05 | 551-212-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | TEANECK | NJ |
| 2019-04-05 | 551-212-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | TEANECK | NJ |
| 2019-04-05 | 551-230-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2019-04-05 | 551-230-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2019-04-05 | 551-230-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2019-04-05 | 551-298-2XXX | 2000–2999 | Assigned | CSC WIRELESS, LLC | 425J | JERSEYCITY | NJ |
| 2019-04-04 | 551-302-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | HACKENSACK | NJ |
| 2019-04-04 | 551-302-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | HACKENSACK | NJ |
| 2019-04-04 | 551-303-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2019-04-04 | 551-303-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2019-03-27 | 551-299-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | FAIR LAWN | NJ |
| 2019-03-21 | 551-314-7XXX | 7000–7999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | CLIFFSIDE | NJ |
| 2019-03-18 | 551-263-3XXX | 3000–3999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | JERSEYCITY | NJ |
| 2019-03-18 | 551-278-2XXX | 2000–2999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | ORADELL | NJ |
| 2019-03-18 | 551-282-8XXX | 8000–8999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | WESTWOOD | NJ |
| 2019-03-18 | 551-292-6XXX | 6000–6999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | KEARNY | NJ |
| 2019-03-18 | 551-296-6XXX | 6000–6999 | Assigned | CORETEL NEW JERSEY, INC. - NJ | 482F | OAKLAND | 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.