NumberResearchRecent thousands-block assignments
7 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, last 30 days — NPA 279
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-17 | 279-294-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2026-09-17 | 279-294-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2026-09-17 | 279-294-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2026-09-17 | 279-880-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2026-09-17 | 279-880-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2026-09-17 | 279-880-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2026-09-17 | 279-880-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2025-10-30 | 279-290-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-10-30 | 279-290-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-10-30 | 279-290-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-09-19 | 279-254-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-09-19 | 279-254-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-05-16 | 279-282-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-05-16 | 279-282-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-05-16 | 279-282-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2025-04-10 | 279-271-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2025-04-10 | 279-271-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2024-10-09 | 279-254-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2024-10-09 | 279-254-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2024-09-18 | 279-246-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2024-08-29 | 279-259-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2024-08-19 | 279-254-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2024-08-19 | 279-254-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2024-07-29 | 279-252-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2024-05-22 | 279-259-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2024-05-22 | 279-259-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2024-05-22 | 279-259-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2024-03-26 | 279-258-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FOLSOM | CA |
| 2024-03-25 | 279-256-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | FOLSOM | CA |
| 2024-03-25 | 279-280-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2024-03-25 | 279-280-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2024-03-25 | 279-280-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2024-03-25 | 279-280-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2024-03-25 | 279-280-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2024-02-29 | 279-257-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-02-29 | 279-257-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-01-23 | 279-248-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-01-23 | 279-248-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-01-23 | 279-248-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2024-01-23 | 279-249-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2024-01-23 | 279-249-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2024-01-23 | 279-251-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | 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.