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 |
|---|---|---|---|---|---|---|---|
| 2007-01-16 | 951-823-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2007-01-16 | 951-870-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2007-01-16 | 951-870-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA |
| 2007-01-10 | 951-200-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MURRIETA | CA |
| 2007-01-04 | 951-398-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WOODCREST | CA |
| 2007-01-04 | 951-878-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LAKEVIEWNU | CA |
| 2006-12-29 | 951-972-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | TEMECULA | CA |
| 2006-12-28 | 951-823-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | RIVERSIDE | CA |
| 2006-12-18 | 951-200-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-12-18 | 951-200-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-12-18 | 951-260-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | HEMT HEMT | CA |
| 2006-12-18 | 951-575-4XXX | 4000–4999 | Assigned | DMR COMMUNICATIONS INC. - CA | 478A | PERRIS | CA |
| 2006-12-15 | 951-208-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MORENO | CA |
| 2006-12-14 | 951-471-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | ELSINORE | CA |
| 2006-12-11 | 951-398-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WOODCREST | CA |
| 2006-12-11 | 951-823-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2006-12-11 | 951-934-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | MIRA LOMA | CA |
| 2006-12-06 | 951-207-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-12-06 | 951-207-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | CORONA | CA |
| 2006-12-06 | 951-553-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | TEMECULA | CA |
| 2006-12-06 | 951-823-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2006-12-06 | 951-823-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2006-12-06 | 951-823-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2006-12-05 | 951-260-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HEMT HEMT | CA |
| 2006-12-05 | 951-599-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HEMT HMLD | CA |
| 2006-12-05 | 951-603-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | TEMSCL CNY | CA |
| 2006-12-05 | 951-665-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HEMT SNJC | CA |
| 2006-12-05 | 951-691-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-12-05 | 951-840-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ARLINGTON | CA |
| 2006-12-01 | 951-473-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRIETA | CA |
| 2006-11-29 | 951-253-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ELSINORE | CA |
| 2006-11-22 | 951-403-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-11-22 | 951-591-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-11-22 | 951-790-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MIRA LOMA | CA |
| 2006-11-22 | 951-870-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CORONA | CA |
| 2006-11-16 | 951-575-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-11-16 | 951-807-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2006-11-02 | 951-797-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | BANNING | CA |
| 2006-10-27 | 951-870-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2006-10-23 | 951-824-5XXX | 5000–5999 | Assigned | DMR COMMUNICATIONS INC. - CA | 478A | RIVERSIDE | CA |
| 2006-10-23 | 951-870-2XXX | 2000–2999 | Assigned | DMR COMMUNICATIONS INC. - CA | 478A | CORONA | CA |
| 2006-10-13 | 951-473-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-10-13 | 951-473-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MURRIETA | CA |
| 2006-10-13 | 951-553-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TEMECULA | CA |
| 2006-10-03 | 951-570-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-10-03 | 951-570-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-10-03 | 951-570-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-10-03 | 951-570-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-10-03 | 951-570-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2006-09-29 | 951-729-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | 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.