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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-07-31 | 916-620-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-07-31 | 916-620-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-07-31 | 916-620-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-07-31 | 916-620-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-07-31 | 916-793-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-07-31 | 916-793-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-07-31 | 925-329-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-07-31 | 925-329-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2015-07-31 | 951-447-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MURRIETA | CA |
| 2015-07-30 | 209-291-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MERCED | CA |
| 2015-07-30 | 213-274-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-07-30 | 213-274-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-07-30 | 213-274-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-07-30 | 213-274-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-07-30 | 213-274-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-07-30 | 213-274-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2015-07-30 | 253-457-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2015-07-30 | 253-457-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2015-07-30 | 253-457-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2015-07-30 | 323-504-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2015-07-30 | 323-504-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2015-07-30 | 323-504-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2015-07-30 | 323-504-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2015-07-30 | 323-504-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2015-07-30 | 323-504-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2015-07-30 | 323-975-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2015-07-30 | 323-975-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2015-07-30 | 323-975-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2015-07-30 | 415-910-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-07-30 | 415-910-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-07-30 | 415-910-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-07-30 | 415-910-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-07-30 | 415-910-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-07-30 | 415-910-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-07-30 | 442-456-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-07-30 | 442-456-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-07-30 | 442-456-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2015-07-30 | 626-346-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2015-07-30 | 626-346-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2015-07-30 | 626-662-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ARCADIA | CA |
| 2015-07-30 | 626-662-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ARCADIA | CA |
| 2015-07-30 | 626-662-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ARCADIA | CA |
| 2015-07-30 | 626-662-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ARCADIA | CA |
| 2015-07-30 | 626-662-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ARCADIA | CA |
| 2015-07-30 | 661-234-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2015-07-30 | 669-294-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2015-07-30 | 669-294-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2015-07-30 | 669-294-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2015-07-30 | 669-294-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2015-07-30 | 669-294-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | 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.