NumberResearchRecent thousands-block assignments
4 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 510
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 |
|---|---|---|---|---|---|---|---|
| 2009-02-17 | 510-443-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2009-02-17 | 510-443-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | FRNK MAIN | CA |
| 2009-02-11 | 510-992-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2009-02-09 | 510-479-1XXX | 1000–1999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OKLD FRTVL | CA |
| 2009-02-09 | 510-779-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ELSBR-PINL | CA |
| 2009-02-06 | 510-230-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | RICHMOND | CA |
| 2009-01-02 | 510-214-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | OKLD ALMD | CA |
| 2009-01-02 | 510-337-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | OKLD ALMD | CA |
| 2009-01-02 | 510-355-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | OKLD ALMD | CA |
| 2009-01-02 | 510-356-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2009-01-02 | 510-423-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2009-01-02 | 510-545-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | OKLD ALMD | CA |
| 2009-01-02 | 510-666-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2008-12-16 | 510-200-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HAYWARD | CA |
| 2008-12-16 | 510-397-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HAYWARD | CA |
| 2008-12-16 | 510-397-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HAYWARD | CA |
| 2008-12-16 | 510-592-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HRCUL-RODE | CA |
| 2008-11-21 | 510-240-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FRNK GRNLF | CA |
| 2008-11-20 | 510-371-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2008-11-20 | 510-371-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2008-11-20 | 510-406-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2008-11-20 | 510-709-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2008-11-13 | 510-417-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ELSBR-PINL | CA |
| 2008-11-12 | 510-200-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | HAYWARD | CA |
| 2008-11-12 | 510-200-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | HAYWARD | CA |
| 2008-11-10 | 510-260-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | RICHMOND | CA |
| 2008-11-10 | 510-383-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | OKLD TRNID | CA |
| 2008-11-10 | 510-423-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | OKLD BKLY | CA |
| 2008-11-10 | 510-491-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | FRNK GRNLF | CA |
| 2008-11-10 | 510-563-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | OKLD TRNID | CA |
| 2008-11-10 | 510-613-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | OKLD TRNID | CA |
| 2008-11-10 | 510-878-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | OKLD TRNID | CA |
| 2008-10-30 | 510-229-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2008-10-27 | 510-253-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | RICHMOND | CA |
| 2008-10-24 | 510-778-1XXX | 1000–1999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | RICHMOND | CA |
| 2008-10-21 | 510-371-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRNK MAIN | CA |
| 2008-10-21 | 510-371-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRNK MAIN | CA |
| 2008-10-21 | 510-394-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD TRNID | CA |
| 2008-10-21 | 510-394-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD TRNID | CA |
| 2008-10-21 | 510-621-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RICHMOND | CA |
| 2008-10-21 | 510-621-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RICHMOND | CA |
| 2008-10-21 | 510-747-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD ALMD | CA |
| 2008-10-21 | 510-761-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD MN-PD | CA |
| 2008-10-21 | 510-761-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD MN-PD | CA |
| 2008-10-21 | 510-771-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRNK OLIVR | CA |
| 2008-10-21 | 510-842-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD FRTVL | CA |
| 2008-10-21 | 510-842-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD FRTVL | CA |
| 2008-10-21 | 510-854-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ELSBR-PINL | CA |
| 2008-10-21 | 510-859-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD BKLY | CA |
| 2008-10-21 | 510-859-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD BKLY | CA |
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.