NumberResearchRecent thousands-block assignments
68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/27/2026
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
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-04-20 | 562-850-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 562-850-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 619-919-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | NATIONALCY | CA |
| 2015-04-20 | 619-919-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | NATIONALCY | CA |
| 2015-04-20 | 650-435-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN MATEO | CA |
| 2015-04-20 | 661-459-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SHAFTER | CA |
| 2015-04-20 | 747-252-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFN GRHL | CA |
| 2015-04-20 | 747-252-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFN GRHL | CA |
| 2015-04-20 | 831-406-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WATSONVL | CA |
| 2015-04-20 | 909-487-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESTLINE | CA |
| 2015-04-20 | 909-551-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DIAMONDBAR | CA |
| 2015-04-20 | 909-551-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DIAMONDBAR | CA |
| 2015-04-20 | 909-672-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | HIGHLAND | CA |
| 2015-04-20 | 916-793-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-04-20 | 916-793-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-04-20 | 916-796-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-04-20 | 916-796-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-04-20 | 916-796-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-04-20 | 925-660-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PLEASANTON | CA |
| 2015-04-16 | 530-443-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MARYSVILLE | CA |
| 2015-04-16 | 530-443-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MARYSVILLE | CA |
| 2015-04-16 | 530-443-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MARYSVILLE | CA |
| 2015-04-16 | 530-786-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2015-04-16 | 530-786-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2015-04-16 | 530-786-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBN MAIN | CA |
| 2015-04-16 | 559-339-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PORTERVL | CA |
| 2015-04-16 | 559-339-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | PORTERVL | CA |
| 2015-04-16 | 559-339-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PORTERVL | CA |
| 2015-04-16 | 559-544-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PORTERVL | CA |
| 2015-04-16 | 669-350-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-16 | 669-350-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-16 | 669-350-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-16 | 669-350-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-16 | 669-350-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-16 | 669-350-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-16 | 669-350-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-15 | 442-262-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA |
| 2015-04-15 | 573-577-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HANNIBAL | MO |
| 2015-04-15 | 775-430-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CARSONCITY | NV |
| 2015-04-15 | 909-734-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-15 | 909-734-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-15 | 909-734-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2015-04-13 | 323-975-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2015-04-13 | 323-975-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2015-04-13 | 323-975-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2015-04-13 | 360-255-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WHATCOMCTY | WA |
| 2015-04-13 | 415-304-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2015-04-13 | 424-521-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2015-04-13 | 424-521-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2015-04-13 | 424-521-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.