NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/22/2026
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 737
New assignments by month
Sep 2026
Aug 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-06-16 | 737-440-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-440-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-16 | 737-455-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2026-06-09 | 737-337-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FENTRESS | TX |
| 2025-12-09 | 737-426-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-12-09 | 737-426-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-12-09 | 737-426-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-21 | 737-426-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-21 | 737-426-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-21 | 737-426-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-21 | 737-426-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-01 | 737-424-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-01 | 737-424-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-01 | 737-426-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-10-01 | 737-426-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-09-22 | 737-424-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-09-22 | 737-424-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-09-02 | 737-424-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-08-19 | 737-424-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-08-19 | 737-424-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-08-12 | 737-424-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-08-12 | 737-424-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-07-21 | 737-424-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-07-21 | 737-733-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-06-18 | 737-390-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BASTROP | TX |
| 2025-06-06 | 737-421-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ROCKDALE | TX |
| 2025-06-06 | 737-421-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ROCKDALE | TX |
| 2025-04-21 | 737-732-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ROCKDALE | TX |
| 2025-02-10 | 737-413-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SMITHVILLE | TX |
| 2025-01-29 | 737-828-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | KEMPNER | TX |
| 2025-01-29 | 737-983-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LOCKHART | TX |
| 2025-01-29 | 737-983-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LOCKHART | TX |
| 2024-12-03 | 737-405-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | KYLE | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.