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 |
|---|---|---|---|---|---|---|---|
| 2018-03-16 | 925-409-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVERMORE | CA |
| 2018-03-16 | 925-993-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CLAYTON | CA |
| 2018-03-14 | 925-885-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORINDA | CA |
| 2018-03-02 | 925-542-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2018-03-02 | 925-542-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2018-03-02 | 925-542-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2018-03-01 | 925-409-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2018-03-01 | 925-409-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2018-02-26 | 925-499-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2018-02-26 | 925-499-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2018-02-26 | 925-499-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2018-02-26 | 925-962-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LAFAYETTE | CA |
| 2018-01-09 | 925-915-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DANVILLE | CA |
| 2018-01-08 | 925-499-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2018-01-08 | 925-499-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2018-01-08 | 925-499-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA |
| 2018-01-05 | 925-436-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | ANTIOCH | CA |
| 2018-01-05 | 925-499-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2018-01-05 | 925-499-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2018-01-05 | 925-499-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2018-01-03 | 925-659-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | BSHP RNCH | CA |
| 2017-12-27 | 925-499-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CONCORD | CA |
| 2017-12-27 | 925-542-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2017-12-27 | 925-542-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2017-12-27 | 925-542-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2017-12-22 | 925-536-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CONCORD | CA |
| 2017-12-20 | 925-214-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2017-12-20 | 925-817-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2017-12-18 | 925-574-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | DUBLN-SNRM | CA |
| 2017-12-18 | 925-574-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | DUBLN-SNRM | CA |
| 2017-12-14 | 925-366-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLEASANTON | CA |
| 2017-12-12 | 925-409-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | LIVERMORE | CA |
| 2017-12-07 | 925-527-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-07 | 925-527-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-07 | 925-527-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-07 | 925-527-9XXX | 9000–9999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-12-01 | 925-532-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-0XXX | 0000–0999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-1XXX | 1000–1999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-527-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | WALNUT CRK | CA |
| 2017-11-30 | 925-990-0XXX | 0000–0999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-1XXX | 1000–1999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-3XXX | 3000–3999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-5XXX | 5000–5999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-6XXX | 6000–6999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-30 | 925-990-9XXX | 9000–9999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SUNOL | CA |
| 2017-11-22 | 925-503-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | 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.