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 |
|---|---|---|---|---|---|---|---|
| 2009-11-02 | 925-965-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLEASANTON | CA |
| 2009-10-30 | 925-913-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | BSHP RNCH | CA |
| 2009-10-30 | 925-913-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | BSHP RNCH | CA |
| 2009-10-08 | 925-238-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2009-10-05 | 925-667-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2009-09-14 | 925-321-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVERMORE | CA |
| 2009-09-03 | 925-719-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DUBLN-SNRM | CA |
| 2009-09-03 | 925-765-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2009-08-18 | 925-681-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2009-08-18 | 925-681-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2009-07-29 | 925-852-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | CA |
| 2009-07-15 | 925-353-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLEASANTON | CA |
| 2009-07-01 | 925-566-8XXX | 8000–8999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | CONCORD | CA |
| 2009-06-29 | 925-321-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVERMORE | CA |
| 2009-06-11 | 925-230-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DUBLN-SNRM | CA |
| 2009-05-27 | 925-362-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | DANVILLE | CA |
| 2009-05-13 | 925-293-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MARTINEZ | CA |
| 2009-05-04 | 925-808-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2009-04-23 | 925-389-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DANVILLE | CA |
| 2009-04-16 | 925-230-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | DUBLN-SNRM | CA |
| 2009-04-06 | 925-249-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | PLEASANTON | CA |
| 2009-04-06 | 925-480-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | BSHP RNCH | CA |
| 2009-04-06 | 925-695-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | CONCORD | CA |
| 2009-04-06 | 925-956-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | WALNUT CRK | CA |
| 2009-04-02 | 925-303-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2009-03-25 | 925-300-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WALNUT CRK | CA |
| 2009-03-12 | 925-238-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2009-03-12 | 925-238-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2009-03-10 | 925-310-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | LAFAYETTE | CA |
| 2009-03-10 | 925-826-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2009-03-10 | 925-826-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2009-03-09 | 925-826-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CONCORD | CA |
| 2009-03-03 | 925-293-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MARTINEZ | CA |
| 2009-02-23 | 925-289-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2009-02-23 | 925-289-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2009-02-20 | 925-663-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2009-02-19 | 925-498-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | BSHP RNCH | CA |
| 2009-02-19 | 925-941-8XXX | 8000–8999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2009-02-06 | 925-206-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2008-12-23 | 925-291-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PSBG WEST | CA |
| 2008-12-22 | 925-303-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2008-12-17 | 925-385-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LAFAYETTE | CA |
| 2008-12-17 | 925-386-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORINDA | CA |
| 2008-12-17 | 925-388-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MORAGA | CA |
| 2008-12-17 | 925-480-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BSHP RNCH | CA |
| 2008-12-17 | 925-709-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PSBG WEST | CA |
| 2008-12-16 | 925-335-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MARTINEZ | CA |
| 2008-12-16 | 925-452-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DUBLN-SNRM | CA |
| 2008-12-16 | 925-526-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PITTSBURG | CA |
| 2008-12-16 | 925-553-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DANVILLE | 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.