NumberResearchRecent thousands-block assignments
16 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 951
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 |
|---|---|---|---|---|---|---|---|
| 2009-04-02 | 951-219-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MURRIETA | CA |
| 2009-03-30 | 951-489-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | MORENO | CA |
| 2009-03-23 | 951-238-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2009-03-18 | 951-643-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2009-03-06 | 951-729-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ARLINGTON | CA |
| 2009-02-26 | 951-268-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CORONA | CA |
| 2009-02-12 | 951-266-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | RIVERSIDE | CA |
| 2009-02-12 | 951-266-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2009-02-12 | 951-266-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2009-02-12 | 951-266-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2009-02-12 | 951-266-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2009-02-12 | 951-266-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | RIVERSIDE | CA |
| 2009-02-12 | 951-266-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | RIVERSIDE | CA |
| 2009-02-12 | 951-266-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2009-02-12 | 951-266-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2009-02-12 | 951-266-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | RIVERSIDE | CA |
| 2009-02-09 | 951-251-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-02-09 | 951-251-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-02-09 | 951-251-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | MORENO | CA |
| 2009-02-05 | 951-392-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2009-01-28 | 951-708-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HEMT SAGE | CA |
| 2009-01-26 | 951-223-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HEMT HMLD | CA |
| 2009-01-26 | 951-389-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HEMT ANZA | CA |
| 2009-01-26 | 951-468-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | IDYLLWILD | CA |
| 2009-01-20 | 951-215-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODCREST | CA |
| 2009-01-20 | 951-824-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA |
| 2009-01-14 | 951-215-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WOODCREST | CA |
| 2009-01-14 | 951-251-6XXX | 6000–6999 | Assigned | FRONTIER CALIFORNIA INC. | 2319 | MORENO | CA |
| 2009-01-14 | 951-251-7XXX | 7000–7999 | Assigned | FRONTIER CALIFORNIA INC. | 2319 | MORENO | CA |
| 2009-01-12 | 951-790-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MIRA LOMA | CA |
| 2009-01-09 | 951-261-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-01-09 | 951-261-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-01-09 | 951-261-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-01-08 | 951-262-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | HEMT ANZA | CA |
| 2009-01-08 | 951-262-1XXX | 1000–1999 | Assigned | WIDE VOICE, LLC - CA | 252F | HEMT ANZA | CA |
| 2009-01-08 | 951-262-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | HEMT ANZA | CA |
| 2009-01-08 | 951-262-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | HEMT ANZA | CA |
| 2008-12-17 | 951-665-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HEMT SNJC | CA |
| 2008-12-17 | 951-878-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LAKEVIEWNU | CA |
| 2008-12-16 | 951-215-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WOODCREST | CA |
| 2008-12-16 | 951-572-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BANNING | CA |
| 2008-12-16 | 951-667-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | TEMSCL CNY | CA |
| 2008-12-11 | 951-261-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2008-12-11 | 951-261-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2008-12-11 | 951-261-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2008-12-09 | 951-225-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | TEMECULA | CA |
| 2008-12-04 | 951-241-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | RIVERSIDE | CA |
| 2008-11-19 | 951-241-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RIVERSIDE | CA |
| 2008-11-13 | 951-327-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HEMT SNJC | CA |
| 2008-11-11 | 951-249-8XXX | 8000–8999 | Assigned | FRONTIER CALIFORNIA INC. | 2319 | MURRIETA | 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.