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 |
|---|---|---|---|---|---|---|---|
| 2005-02-17 | 510-355-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | OKLD ALMD | CA |
| 2005-02-17 | 510-355-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | OKLD ALMD | CA |
| 2005-02-17 | 510-485-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-485-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-485-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-485-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-485-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-485-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-565-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FRNK MAIN | CA |
| 2005-02-17 | 510-575-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-575-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | OKLD MN-PD | CA |
| 2005-02-17 | 510-927-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-927-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-927-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-927-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-927-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-17 | 510-927-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | OKLD FRTVL | CA |
| 2005-02-16 | 510-962-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HAYWARD | CA |
| 2005-02-08 | 510-373-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | OKLD ALMD | CA |
| 2005-02-03 | 510-285-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD MN-PD | CA |
| 2005-02-02 | 510-921-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | HAYWARD | CA |
| 2005-01-28 | 510-213-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD FRTVL | CA |
| 2005-01-25 | 510-861-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2005-01-25 | 510-861-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2005-01-25 | 510-861-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2005-01-25 | 510-861-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HAYWARD | CA |
| 2005-01-21 | 510-229-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD BKLY | CA |
| 2005-01-13 | 510-323-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RICHMOND | CA |
| 2005-01-12 | 510-280-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OKLD BKLY | CA |
| 2005-01-12 | 510-280-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OKLD BKLY | CA |
| 2005-01-12 | 510-280-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OKLD BKLY | CA |
| 2005-01-12 | 510-300-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | HAYWARD | CA |
| 2005-01-12 | 510-336-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OKLD FRTVL | CA |
| 2005-01-12 | 510-336-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OKLD FRTVL | CA |
| 2005-01-12 | 510-336-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OKLD FRTVL | CA |
| 2005-01-04 | 510-875-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | OKLD TRNID | CA |
| 2004-12-14 | 510-229-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD BKLY | CA |
| 2004-12-13 | 510-759-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD MN-PD | CA |
| 2004-12-10 | 510-279-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FRNK OLIVR | CA |
| 2004-12-10 | 510-400-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FRNK GRNLF | CA |
| 2004-12-10 | 510-545-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OKLD ALMD | CA |
| 2004-12-07 | 510-691-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HRCUL-RODE | CA |
| 2004-11-19 | 510-300-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | HAYWARD | CA |
| 2004-11-17 | 510-461-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | HAYWARD | 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.