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 |
|---|---|---|---|---|---|---|---|
| 2024-11-25 | 551-412-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2024-11-25 | 551-412-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2024-11-25 | 551-412-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2024-11-25 | 551-412-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2024-11-25 | 551-412-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2024-11-25 | 551-413-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEARNY | NJ |
| 2024-11-20 | 551-348-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2024-11-20 | 551-379-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2024-11-20 | 551-379-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2024-11-20 | 551-391-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | TEANECK | NJ |
| 2024-11-20 | 551-395-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2024-11-20 | 551-401-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2024-11-20 | 551-401-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2024-11-20 | 551-403-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2024-11-20 | 551-406-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | CLOSTER | NJ |
| 2024-11-20 | 551-408-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2024-11-20 | 551-995-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2024-11-20 | 551-997-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2024-11-20 | 551-997-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2024-11-15 | 551-401-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | UNION CITY | NJ |
| 2024-11-08 | 551-218-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | RAMSEY | NJ |
| 2024-11-08 | 551-361-5XXX | 5000–5999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2024-11-08 | 551-382-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | ENGLEWOOD | NJ |
| 2024-11-08 | 551-390-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2024-11-08 | 551-390-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | PARK RIDGE | NJ |
| 2024-11-08 | 551-392-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2024-11-08 | 551-401-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2024-11-08 | 551-407-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2024-11-08 | 551-407-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2024-11-08 | 551-407-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | KEARNY | NJ |
| 2024-11-08 | 551-407-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEARNY | NJ |
| 2024-11-08 | 551-407-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEARNY | NJ |
| 2024-11-08 | 551-407-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEARNY | NJ |
| 2024-11-08 | 551-410-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2024-11-08 | 551-410-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2024-11-07 | 551-403-0XXX | 0000–0999 | Assigned | NUSO, LLC | 732J | BAYONNE | NJ |
| 2024-11-07 | 551-403-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | BAYONNE | NJ |
| 2024-11-07 | 551-408-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | DUMONT | NJ |
| 2024-11-07 | 551-409-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | HACKENSACK | NJ |
| 2024-11-07 | 551-997-3XXX | 3000–3999 | Assigned | NUSO, LLC | 732J | JERSEYCITY | NJ |
| 2024-11-01 | 551-401-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | UNION CITY | NJ |
| 2024-10-23 | 551-367-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | FAIR LAWN | NJ |
| 2024-10-23 | 551-367-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | FAIR LAWN | NJ |
| 2024-10-18 | 551-271-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | BAYONNE | NJ |
| 2024-10-18 | 551-401-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | UNION CITY | NJ |
| 2024-10-18 | 551-997-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | JERSEYCITY | NJ |
| 2024-10-18 | 551-997-9XXX | 9000–9999 | Assigned | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2024-10-14 | 551-357-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NJ | 637C | OAKLAND | NJ |
| 2024-10-14 | 551-360-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | NJ |
| 2024-10-14 | 551-360-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | LEONIA | 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.