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 |
|---|---|---|---|---|---|---|---|
| 2006-08-15 | 951-934-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | MIRA LOMA | CA |
| 2006-08-15 | 951-934-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | MIRA LOMA | CA |
| 2006-08-14 | 951-790-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MIRA LOMA | CA |
| 2006-08-10 | 951-603-0XXX | 0000–0999 | Assigned | PACIFIC BELL | 9740 | TEMSCL CNY | CA |
| 2006-08-08 | 951-240-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | TEMECULA | CA |
| 2006-08-08 | 951-579-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ELSINORE | CA |
| 2006-08-08 | 951-691-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MURRIETA | CA |
| 2006-07-26 | 951-591-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-07-26 | 951-807-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2006-07-26 | 951-807-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2006-07-26 | 951-807-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORENO | CA |
| 2006-07-25 | 951-240-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TEMECULA | CA |
| 2006-07-24 | 951-240-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | TEMECULA | CA |
| 2006-07-24 | 951-667-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMSCL CNY | CA |
| 2006-07-21 | 951-840-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARLINGTON | CA |
| 2006-07-19 | 951-691-5XXX | 5000–5999 | Assigned | FRONTIER CALIFORNIA INC. | 2319 | MURRIETA | CA |
| 2006-07-13 | 951-398-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WOODCREST | CA |
| 2006-07-11 | 951-591-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2006-07-11 | 951-591-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2006-07-11 | 951-591-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2006-07-07 | 951-427-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-07-07 | 951-867-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2006-07-06 | 951-427-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-07-06 | 951-427-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-06-29 | 951-240-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMECULA | CA |
| 2006-06-29 | 951-824-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA |
| 2006-06-26 | 951-385-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-06-26 | 951-385-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-06-26 | 951-385-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-06-22 | 951-427-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CORONA | CA |
| 2006-06-21 | 951-797-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BANNING | CA |
| 2006-06-21 | 951-797-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BANNING | CA |
| 2006-06-16 | 951-692-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2006-06-16 | 951-692-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2006-06-16 | 951-692-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2006-06-15 | 951-824-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA |
| 2006-06-13 | 951-790-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | MIRA LOMA | CA |
| 2006-06-08 | 951-385-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-06-08 | 951-385-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-06-08 | 951-710-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2006-05-18 | 951-722-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-05-16 | 951-824-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2006-05-15 | 951-403-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | CORONA | CA |
| 2006-05-15 | 951-403-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-05-12 | 951-260-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | HEMT HEMT | CA |
| 2006-05-12 | 951-260-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2006-05-12 | 951-260-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2006-05-12 | 951-260-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HEMT HEMT | CA |
| 2006-05-12 | 951-385-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | PERRIS | CA |
| 2006-05-12 | 951-487-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | HEMT SNJC | 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.