NumberResearchRecent thousands-block assignments
35 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2008-05-07 | 925-241-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DUBLN-SNRM | CA |
| 2008-05-07 | 925-298-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LAFAYETTE | CA |
| 2008-05-06 | 925-309-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DANVILLE | CA |
| 2008-05-06 | 925-309-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DANVILLE | CA |
| 2008-05-06 | 925-705-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WALNUT CRK | CA |
| 2008-05-05 | 925-588-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WALNUT CRK | CA |
| 2008-04-03 | 925-270-3XXX | 3000–3999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | CONCORD | CA |
| 2008-04-03 | 925-478-8XXX | 8000–8999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | WALNUT CRK | CA |
| 2008-03-13 | 925-400-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLEASANTON | CA |
| 2008-03-06 | 925-406-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | DANVILLE | CA |
| 2008-03-03 | 925-658-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2008-02-22 | 925-321-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVERMORE | CA |
| 2008-02-19 | 925-206-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2008-02-15 | 925-493-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | LIVERMORE | CA |
| 2008-02-08 | 925-588-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2008-01-29 | 925-658-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2008-01-24 | 925-891-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WALNUT CRK | CA |
| 2008-01-21 | 925-203-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PITTSBURG | CA |
| 2007-12-06 | 925-203-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PITTSBURG | CA |
| 2007-11-28 | 925-201-8XXX | 8000–8999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PLEASANTON | CA |
| 2007-11-28 | 925-206-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ANTIOCH | CA |
| 2007-11-21 | 925-206-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2007-11-21 | 925-270-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | CA |
| 2007-11-14 | 925-951-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WALNUT CRK | CA |
| 2007-11-13 | 925-786-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BSHP RNCH | CA |
| 2007-11-09 | 925-983-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BSHP RNCH | CA |
| 2007-11-07 | 925-255-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ORINDA | CA |
| 2007-11-06 | 925-667-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2007-10-22 | 925-967-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DUBLN-SNRM | CA |
| 2007-09-17 | 925-719-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DUBLN-SNRM | CA |
| 2007-09-17 | 925-822-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2007-09-17 | 925-822-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2007-09-11 | 925-395-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2007-09-06 | 925-826-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2007-09-06 | 925-826-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2007-08-31 | 925-206-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2007-08-31 | 925-206-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2007-08-31 | 925-206-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2007-08-22 | 925-318-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PITTSBURG | CA |
| 2007-08-10 | 925-407-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2007-08-10 | 925-407-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2007-07-30 | 925-705-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2007-07-30 | 925-705-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | WALNUT CRK | CA |
| 2007-07-30 | 925-956-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2007-07-30 | 925-956-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | WALNUT CRK | CA |
| 2007-07-18 | 925-237-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2007-07-05 | 925-786-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BSHP RNCH | CA |
| 2007-07-05 | 925-808-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2007-06-25 | 925-303-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ANTIOCH | CA |
| 2007-06-14 | 925-303-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.