NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026
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 350
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-07-22 | 350-998-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2026-07-22 | 350-998-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2026-01-06 | 350-222-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HUGHSON | CA |
| 2025-12-10 | 350-249-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-12-10 | 350-249-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-12-10 | 350-249-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-12-10 | 350-249-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-10-30 | 350-248-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-10-30 | 350-248-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-10-30 | 350-248-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-08-20 | 350-244-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | JACKSON | CA |
| 2025-08-20 | 350-247-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LODI | CA |
| 2025-08-20 | 350-248-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-08-20 | 350-248-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-08-20 | 350-248-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-08-20 | 350-248-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-05-22 | 350-224-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-05-22 | 350-233-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-05-22 | 350-233-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-05-22 | 350-233-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-04-08 | 350-239-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LOS BANOS | CA |
| 2025-04-04 | 350-233-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-04-04 | 350-233-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-04-04 | 350-233-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-04-04 | 350-233-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2025-04-04 | 350-233-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-12-06 | 350-236-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | JAMESTOWN | CA |
| 2024-12-06 | 350-236-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | JAMESTOWN | CA |
| 2024-11-07 | 350-750-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNRA MAIN | CA |
| 2024-10-21 | 350-233-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-10-21 | 350-233-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-10-17 | 350-224-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-08-28 | 350-750-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNRA MAIN | CA |
| 2024-08-19 | 350-224-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-08-19 | 350-224-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-08-19 | 350-224-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-07-29 | 350-225-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LOS BANOS | CA |
| 2024-07-29 | 350-225-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LOS BANOS | CA |
| 2024-06-21 | 350-224-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-06-21 | 350-224-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-06-12 | 350-221-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LODI | CA |
| 2024-05-22 | 350-222-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HUGHSON | CA |
| 2024-03-28 | 350-350-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2024-03-28 | 350-350-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2024-03-28 | 350-350-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | STOCKTON | CA |
| 2024-03-06 | 350-218-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MANTECA | CA |
| 2024-03-06 | 350-218-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MANTECA | CA |
| 2024-01-23 | 350-500-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-01-23 | 350-500-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2024-01-23 | 350-500-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.