NumberResearchRecent thousands-block assignments
18 blocks assigned in October 2025 · from the daily NANPA thousands-block report, 09/19/2026
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, October 2025 — NPA 951
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-30 | 951-649-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ARLINGTON | CA |
| 2025-10-30 | 951-649-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ARLINGTON | CA |
| 2025-10-30 | 951-649-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ARLINGTON | CA |
| 2025-10-30 | 951-754-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SUN CITY | CA |
| 2025-10-21 | 951-669-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2025-10-21 | 951-804-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2025-10-21 | 951-804-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2025-10-16 | 951-792-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | ARLINGTON | CA |
| 2025-10-16 | 951-806-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | MORENO | CA |
| 2025-10-08 | 951-946-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | HEMT SNJC | CA |
| 2025-10-03 | 951-632-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2025-10-02 | 951-792-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | ARLINGTON | CA |
| 2025-10-02 | 951-798-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2025-10-02 | 951-803-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2025-10-02 | 951-803-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2025-10-02 | 951-803-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2025-10-02 | 951-803-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2025-10-02 | 951-803-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.