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 |
|---|---|---|---|---|---|---|---|
| 2016-01-27 | 925-701-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | PLEASANTON | CA |
| 2016-01-27 | 925-701-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | PLEASANTON | CA |
| 2016-01-27 | 925-718-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | DANVILLE | CA |
| 2016-01-27 | 925-718-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | DANVILLE | CA |
| 2016-01-12 | 925-483-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | CONCORD | CA |
| 2016-01-12 | 925-494-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CONCORD | CA |
| 2016-01-06 | 925-918-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLEASANTON | CA |
| 2015-12-30 | 925-471-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CONCORD | CA |
| 2015-12-30 | 925-483-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CONCORD | CA |
| 2015-12-29 | 925-316-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | MARTINEZ | CA |
| 2015-12-29 | 925-433-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WALNUT CRK | CA |
| 2015-12-18 | 925-282-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LAFAYETTE | CA |
| 2015-12-18 | 925-723-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MARTINEZ | CA |
| 2015-12-08 | 925-433-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2015-12-04 | 925-366-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLEASANTON | CA |
| 2015-12-04 | 925-678-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DANVILLE | CA |
| 2015-11-25 | 925-471-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2015-11-23 | 925-204-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2015-11-19 | 925-871-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LAFAYETTE | CA |
| 2015-11-18 | 925-317-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | ORINDA | CA |
| 2015-11-18 | 925-594-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | DANVILLE | CA |
| 2015-11-18 | 925-794-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | MORAGA | CA |
| 2015-11-18 | 925-800-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | LIVERMORE | CA |
| 2015-11-18 | 925-913-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | BSHP RNCH | CA |
| 2015-11-18 | 925-918-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PLEASANTON | CA |
| 2015-11-18 | 925-999-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | DUBLN-SNRM | CA |
| 2015-11-09 | 925-204-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2015-11-09 | 925-204-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2015-11-09 | 925-252-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PITTSBURG | CA |
| 2015-11-09 | 925-252-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PITTSBURG | CA |
| 2015-11-09 | 925-433-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | WALNUT CRK | CA |
| 2015-11-09 | 925-679-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ECONTRCOST | CA |
| 2015-11-02 | 925-433-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WALNUT CRK | CA |
| 2015-10-30 | 925-391-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2015-10-30 | 925-809-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ECONTRCOST | CA |
| 2015-10-30 | 925-809-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ECONTRCOST | CA |
| 2015-10-30 | 925-854-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | DANVILLE | CA |
| 2015-10-28 | 925-202-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PLEASANTON | CA |
| 2015-10-22 | 925-983-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BSHP RNCH | CA |
| 2015-10-21 | 925-967-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DUBLN-SNRM | CA |
| 2015-10-16 | 925-494-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2015-10-14 | 925-290-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2015-10-13 | 925-663-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SUNOL | CA |
| 2015-09-30 | 925-393-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2015-09-30 | 925-393-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2015-09-29 | 925-665-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PITTSBURG | CA |
| 2015-09-24 | 925-626-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ECONTRCOST | CA |
| 2015-09-22 | 925-204-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-09-22 | 925-204-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-09-22 | 925-204-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | 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.