NumberResearchRecent thousands-block assignments
27 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 |
|---|---|---|---|---|---|---|---|
| 2006-03-07 | 951-385-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | PERRIS | CA |
| 2006-03-01 | 951-403-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2006-03-01 | 951-403-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2006-03-01 | 951-403-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2006-03-01 | 951-403-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2006-02-21 | 951-742-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA |
| 2006-02-20 | 951-796-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-02-20 | 951-796-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-02-20 | 951-796-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-02-17 | 951-275-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2006-02-15 | 951-902-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2006-02-10 | 951-667-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | TEMSCL CNY | CA |
| 2006-02-09 | 951-816-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRIETA | CA |
| 2006-02-07 | 951-493-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | CORONA | CA |
| 2006-02-06 | 951-776-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WOODCREST | CA |
| 2006-02-03 | 951-284-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CORONA | CA |
| 2006-02-03 | 951-479-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CORONA | CA |
| 2006-02-02 | 951-659-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | IDYLLWILD | CA |
| 2006-01-27 | 951-260-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2006-01-24 | 951-258-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CORONA | CA |
| 2006-01-24 | 951-284-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CORONA | CA |
| 2006-01-24 | 951-479-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CORONA | CA |
| 2006-01-24 | 951-691-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | MURRIETA | CA |
| 2006-01-20 | 951-973-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | MURRIETA | CA |
| 2006-01-19 | 951-973-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-01-19 | 951-973-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-01-19 | 951-973-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-01-15 | 951-258-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-01-15 | 951-973-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRIETA | CA |
| 2006-01-13 | 951-795-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | TEMECULA | CA |
| 2006-01-11 | 951-284-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-01-11 | 951-284-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | CORONA | CA |
| 2006-01-11 | 951-770-0XXX | 0000–0999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | TEMECULA | CA |
| 2006-01-11 | 951-770-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMECULA | CA |
| 2006-01-11 | 951-770-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | TEMECULA | CA |
| 2006-01-11 | 951-770-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | TEMECULA | CA |
| 2006-01-11 | 951-902-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2006-01-10 | 951-722-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-01-10 | 951-973-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MURRIETA | CA |
| 2006-01-05 | 951-742-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2005-12-29 | 951-941-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIVERSIDE | CA |
| 2005-12-29 | 951-941-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIVERSIDE | CA |
| 2005-12-29 | 951-941-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIVERSIDE | CA |
| 2005-12-29 | 951-941-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIVERSIDE | 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.