NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · 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, all time — NPA 951
New assignments by month
Sep 2026
Aug 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-04 | 951-632-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2026-08-04 | 951-632-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2026-03-11 | 951-803-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2026-03-11 | 951-832-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2026-03-11 | 951-832-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2026-03-11 | 951-832-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2026-03-11 | 951-832-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2026-02-05 | 951-810-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2026-01-06 | 951-649-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2026-01-06 | 951-649-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2025-12-17 | 951-806-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-12-17 | 951-806-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-12-17 | 951-806-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-12-17 | 951-810-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-11-24 | 951-806-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-11-24 | 951-806-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-11-24 | 951-806-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-11-24 | 951-806-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-11-24 | 951-806-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-11-24 | 951-806-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | 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 |
| 2025-10-03 | 951-632-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | 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 |
| 2025-09-12 | 951-802-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-09-12 | 951-802-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-09-12 | 951-802-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-09-12 | 951-802-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-08-20 | 951-726-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2025-08-20 | 951-726-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2025-08-20 | 951-726-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2025-08-20 | 951-745-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2025-08-20 | 951-745-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2025-08-20 | 951-745-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2025-06-30 | 951-209-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-06-30 | 951-705-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-06-30 | 951-713-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2025-06-18 | 951-726-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2025-06-18 | 951-726-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA |
| 2025-06-18 | 951-792-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2025-06-18 | 951-792-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2025-06-18 | 951-792-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2025-06-18 | 951-792-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARLINGTON | CA |
| 2025-05-16 | 951-753-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | 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.