NumberResearchRecent thousands-block assignments
35 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 925
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 |
|---|---|---|---|---|---|---|---|
| 2015-05-18 | 925-626-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ECONTRCOST | CA |
| 2015-05-18 | 925-635-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PITTSBURG | CA |
| 2015-05-11 | 925-344-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2015-05-11 | 925-418-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ECONTRCOST | CA |
| 2015-05-11 | 925-418-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ECONTRCOST | CA |
| 2015-05-11 | 925-471-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2015-05-11 | 925-483-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2015-05-07 | 925-384-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-05-07 | 925-384-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-05-07 | 925-384-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-04-29 | 925-483-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2015-04-29 | 925-483-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2015-04-29 | 925-483-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2015-04-29 | 925-483-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2015-04-29 | 925-483-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2015-04-23 | 925-483-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CONCORD | CA |
| 2015-04-22 | 925-402-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ORINDA | CA |
| 2015-04-21 | 925-667-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LIVERMORE | CA |
| 2015-04-20 | 925-494-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-20 | 925-494-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-20 | 925-494-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-20 | 925-494-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-20 | 925-660-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PLEASANTON | CA |
| 2015-04-13 | 925-391-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-13 | 925-471-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-13 | 925-471-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2015-04-07 | 925-750-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLEASANTON | CA |
| 2015-03-30 | 925-378-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WALNUT CRK | CA |
| 2015-03-30 | 925-384-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | ANTIOCH | CA |
| 2015-03-30 | 925-626-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | ECONTRCOST | CA |
| 2015-03-30 | 925-635-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PITTSBURG | CA |
| 2015-03-30 | 925-725-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DANVILLE | CA |
| 2015-03-30 | 925-889-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | CLAYTON | CA |
| 2015-03-30 | 925-905-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DUBLN-SNRM | CA |
| 2015-03-09 | 925-384-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-03-09 | 925-384-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-03-05 | 925-316-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MARTINEZ | CA |
| 2015-03-05 | 925-316-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MARTINEZ | CA |
| 2015-03-05 | 925-316-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MARTINEZ | CA |
| 2015-03-05 | 925-725-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-05 | 925-791-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-05 | 925-791-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-05 | 925-791-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-05 | 925-791-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-05 | 925-791-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-05 | 925-791-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2015-03-03 | 925-663-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SUNOL | CA |
| 2015-02-27 | 925-854-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DANVILLE | CA |
| 2015-02-27 | 925-854-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DANVILLE | CA |
| 2015-02-26 | 925-800-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LIVERMORE | 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.