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 415
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-05-01 | 415-590-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-05-01 | 415-603-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-05-01 | 415-815-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-05-01 | 415-815-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-05-01 | 415-815-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-718-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-791-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-02-14 | 415-791-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 415-791-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-01-11 | 415-791-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2023-12-05 | 415-594-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2023-12-05 | 415-594-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2023-12-05 | 415-594-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2023-12-05 | 415-594-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2021-02-22 | 415-605-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2021-02-22 | 415-605-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2019-06-21 | 415-375-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2018-12-27 | 415-352-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2018-12-27 | 415-882-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2018-12-03 | 415-815-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2018-12-03 | 415-815-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2018-10-18 | 415-815-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2016-06-28 | 415-949-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | NICASIO | CA |
| 2016-04-28 | 415-909-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2015-11-11 | 415-996-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | IGNACIO | CA |
| 2015-11-11 | 415-996-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | IGNACIO | CA |
| 2015-10-29 | 415-619-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-10-29 | 415-619-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-10-29 | 415-619-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-10-29 | 415-619-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-10-29 | 415-619-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-10-29 | 415-619-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-10-09 | 415-849-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CORTEMADRA | CA |
| 2015-10-09 | 415-849-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CORTEMADRA | CA |
| 2015-08-26 | 415-301-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | NOVATO | CA |
| 2015-08-21 | 415-949-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | NICASIO | CA |
| 2015-08-03 | 415-619-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | 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.