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 |
|---|---|---|---|---|---|---|---|
| 2008-03-03 | 951-496-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2008-02-25 | 951-746-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SUN CITY | CA |
| 2008-02-25 | 951-746-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SUN CITY | CA |
| 2008-02-22 | 951-220-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CORONA | CA |
| 2008-02-19 | 951-224-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | RIVERSIDE | CA |
| 2008-02-08 | 951-224-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2008-02-05 | 951-402-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BANNING | CA |
| 2008-02-01 | 951-708-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HEMT SAGE | CA |
| 2008-01-31 | 951-225-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMECULA | CA |
| 2008-01-31 | 951-225-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMECULA | CA |
| 2008-01-30 | 951-200-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MURRIETA | CA |
| 2008-01-30 | 951-239-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MURRIETA | CA |
| 2008-01-24 | 951-588-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2008-01-23 | 951-846-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BANNING | CA |
| 2008-01-22 | 951-225-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMECULA | CA |
| 2008-01-15 | 951-238-3XXX | 3000–3999 | Assigned | FRONTIER CALIFORNIA INC. | 2319 | PERRIS | CA |
| 2008-01-15 | 951-603-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMSCL CNY | CA |
| 2008-01-15 | 951-790-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MIRA LOMA | CA |
| 2008-01-15 | 951-790-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MIRA LOMA | CA |
| 2008-01-11 | 951-225-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2008-01-11 | 951-239-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MURRIETA | CA |
| 2008-01-11 | 951-282-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2008-01-11 | 951-282-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2008-01-11 | 951-553-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2008-01-11 | 951-692-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2008-01-02 | 951-224-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA |
| 2007-12-21 | 951-208-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2007-12-07 | 951-241-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2007-12-07 | 951-241-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2007-12-07 | 951-241-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2007-12-07 | 951-241-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2007-12-07 | 951-241-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2007-12-07 | 951-241-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2007-11-20 | 951-238-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | PERRIS | CA |
| 2007-11-12 | 951-225-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2007-11-12 | 951-496-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2007-11-12 | 951-496-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2007-11-12 | 951-807-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2007-11-06 | 951-226-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ELSINORE | CA |
| 2007-11-06 | 951-746-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUN CITY | CA |
| 2007-10-19 | 951-603-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | TEMSCL CNY | CA |
| 2007-10-18 | 951-238-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PERRIS | CA |
| 2007-10-18 | 951-238-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PERRIS | CA |
| 2007-10-15 | 951-282-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HEMT HEMT | CA |
| 2007-10-15 | 951-282-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HEMT HEMT | CA |
| 2007-10-04 | 951-239-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MURRIETA | CA |
| 2007-10-04 | 951-239-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MURRIETA | CA |
| 2007-10-04 | 951-496-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CORONA | CA |
| 2007-10-04 | 951-496-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CORONA | CA |
| 2007-10-02 | 951-226-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ELSINORE | 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.