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 424
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-04-15 | 424-249-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2026-04-15 | 424-313-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2026-04-15 | 424-431-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2026-04-15 | 424-453-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2026-04-15 | 424-550-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2025-09-12 | 424-437-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2025-06-05 | 424-556-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2024-11-08 | 424-520-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-10-09 | 424-455-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CULVERCITY | CA |
| 2024-10-09 | 424-474-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CULVERCITY | CA |
| 2024-09-09 | 424-516-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LOMITA | CA |
| 2024-08-28 | 424-492-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-08-28 | 424-492-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-08-28 | 424-492-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-07-30 | 424-514-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-30 | 424-514-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-30 | 424-514-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-30 | 424-514-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-30 | 424-514-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-30 | 424-514-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-29 | 424-467-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-29 | 424-467-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-29 | 424-535-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-29 | 424-565-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-07-29 | 424-565-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-07-29 | 424-565-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-07-29 | 424-565-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | TORRANCE | CA |
| 2024-07-29 | 424-946-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-06-03 | 424-513-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-06-03 | 424-513-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-06-03 | 424-513-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-06-03 | 424-513-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-06-03 | 424-513-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-06-03 | 424-513-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-31 | 424-510-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-31 | 424-510-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-31 | 424-510-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-31 | 424-510-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-10 | 424-509-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2024-05-10 | 424-509-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2024-05-10 | 424-509-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2024-05-10 | 424-509-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2024-05-10 | 424-547-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2024-05-01 | 424-510-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-01 | 424-758-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-02-14 | 424-507-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-02-14 | 424-507-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-02-14 | 424-507-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-02-14 | 424-507-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-02-14 | 424-507-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | 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.