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 |
|---|---|---|---|---|---|---|---|
| 2008-12-16 | 925-567-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLAYTON | CA |
| 2008-12-04 | 925-262-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2008-12-04 | 925-951-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2008-11-26 | 925-418-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ECONTRCOST | CA |
| 2008-11-25 | 925-356-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2008-11-25 | 925-405-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2008-11-21 | 925-493-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | LIVERMORE | CA |
| 2008-11-17 | 925-238-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2008-11-13 | 925-395-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2008-10-31 | 925-238-0XXX | 0000–0999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ANTIOCH | CA |
| 2008-10-24 | 925-237-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ANTIOCH | CA |
| 2008-10-24 | 925-405-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2008-10-24 | 925-405-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2008-10-24 | 925-456-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LIVERMORE | CA |
| 2008-10-24 | 925-679-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ECONTRCOST | CA |
| 2008-10-23 | 925-399-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLEASANTON | CA |
| 2008-10-23 | 925-979-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALNUT CRK | CA |
| 2008-10-15 | 925-246-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | CA |
| 2008-10-14 | 925-273-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LIVERMORE | CA |
| 2008-10-03 | 925-237-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2008-10-03 | 925-407-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2008-10-03 | 925-786-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BSHP RNCH | CA |
| 2008-09-30 | 925-271-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLEASANTON | CA |
| 2008-09-29 | 925-789-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUNOL | CA |
| 2008-09-09 | 925-202-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLEASANTON | CA |
| 2008-09-08 | 925-262-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2008-08-25 | 925-265-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CONCORD | CA |
| 2008-08-18 | 925-961-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVERMORE | CA |
| 2008-08-12 | 925-826-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2008-08-05 | 925-234-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2008-08-05 | 925-786-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BSHP RNCH | CA |
| 2008-08-04 | 925-521-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | CA |
| 2008-08-04 | 925-705-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2008-08-04 | 925-954-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | WALNUT CRK | CA |
| 2008-08-01 | 925-267-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PITTSBURG | CA |
| 2008-07-30 | 925-385-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LAFAYETTE | CA |
| 2008-07-10 | 925-822-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2008-07-10 | 925-822-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2008-07-09 | 925-206-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2008-07-08 | 925-705-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WALNUT CRK | CA |
| 2008-06-25 | 925-826-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2008-06-23 | 925-206-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANTIOCH | CA |
| 2008-06-23 | 925-273-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LIVERMORE | CA |
| 2008-06-23 | 925-418-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ECONTRCOST | CA |
| 2008-06-23 | 925-524-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CLAYTON | CA |
| 2008-06-04 | 925-705-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2008-05-29 | 925-626-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ECONTRCOST | CA |
| 2008-05-15 | 925-808-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CONCORD | CA |
| 2008-05-09 | 925-206-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2008-05-09 | 925-273-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | 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.