NumberResearchRecent thousands-block assignments
3 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, last 30 days — NPA 820
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 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 |
|---|---|---|---|---|---|---|---|
| 2026-09-17 | 820-820-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SANBARBARA | CA |
| 2026-09-17 | 820-820-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SANBARBARA | CA |
| 2026-09-17 | 820-820-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SANBARBARA | CA |
| 2026-08-20 | 820-249-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2026-08-20 | 820-249-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2026-07-08 | 820-235-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2026-03-11 | 820-235-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2026-03-11 | 820-235-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2025-11-06 | 820-237-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-11-06 | 820-246-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-11-06 | 820-246-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-11-06 | 820-246-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-11-06 | 820-246-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-10-02 | 820-217-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-10-02 | 820-217-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-10-02 | 820-241-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-10-02 | 820-241-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-08-20 | 820-235-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2025-08-20 | 820-235-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2025-07-28 | 820-217-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-07-28 | 820-217-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-07-28 | 820-241-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-07-28 | 820-241-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-06-30 | 820-216-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROYOGRND | CA |
| 2025-06-30 | 820-216-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROYOGRND | CA |
| 2025-05-30 | 820-241-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-05-30 | 820-241-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-05-30 | 820-241-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-05-30 | 820-241-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-04-25 | 820-237-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-04-25 | 820-241-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-04-25 | 820-241-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-03-06 | 820-237-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-03-06 | 820-237-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-03-06 | 820-237-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-01-24 | 820-237-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2025-01-24 | 820-237-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-12-16 | 820-237-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-11-07 | 820-235-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VNTRA CNTL | CA |
| 2024-08-28 | 820-216-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROYOGRND | CA |
| 2024-08-28 | 820-998-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-08-28 | 820-998-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-08-28 | 820-998-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-08-28 | 820-998-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-08-28 | 820-998-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-08-28 | 820-998-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-08-28 | 820-998-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-07-15 | 820-998-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-07-15 | 820-998-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ATASCADERO | CA |
| 2024-06-14 | 820-823-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SANTA YNEZ | 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.