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 |
|---|---|---|---|---|---|---|---|
| 2015-02-17 | 224-509-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ALGONQUIN | IL |
| 2015-02-17 | 224-509-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ALGONQUIN | IL |
| 2015-02-17 | 224-509-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ALGONQUIN | IL |
| 2015-02-17 | 331-308-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BARTLETT | IL |
| 2015-02-17 | 331-308-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BARTLETT | IL |
| 2015-02-17 | 331-308-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BARTLETT | IL |
| 2015-02-17 | 331-308-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BARTLETT | IL |
| 2015-02-16 | 626-295-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2015-02-16 | 626-295-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2015-02-13 | 916-298-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 916-298-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 916-298-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 916-846-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 951-384-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2015-02-13 | 951-425-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2015-02-13 | 951-425-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2015-02-13 | 951-425-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA |
| 2015-02-13 | 951-472-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2015-02-13 | 951-472-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2015-02-13 | 951-472-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2015-02-12 | 209-289-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2015-02-12 | 209-289-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2015-02-12 | 209-289-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MODESTO | CA |
| 2015-02-12 | 209-328-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MANTECA | CA |
| 2015-02-11 | 253-252-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TACOMAWVLY | WA |
| 2015-02-11 | 253-252-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | TACOMAWVLY | WA |
| 2015-02-11 | 253-640-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | TACOMAWVLY | WA |
| 2015-02-11 | 619-214-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2015-02-11 | 619-214-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2015-02-11 | 619-214-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2015-02-11 | 619-214-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2015-02-11 | 619-214-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2015-02-11 | 626-342-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
| 2015-02-11 | 626-342-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
| 2015-02-11 | 626-342-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
| 2015-02-11 | 626-342-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
| 2015-02-11 | 909-676-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIALTO | CA |
| 2015-02-11 | 949-627-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA |
| 2015-02-10 | 209-326-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ATWATER | CA |
| 2015-02-10 | 559-373-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | MADERA | CA |
| 2015-02-10 | 575-288-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LAS CRUCES | NM |
| 2015-02-10 | 618-419-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANITE CY | IL |
| 2015-02-10 | 618-419-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANITE CY | IL |
| 2015-02-10 | 618-419-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANITE CY | IL |
| 2015-02-10 | 618-419-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GRANITE CY | IL |
| 2015-02-10 | 661-372-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | DELANO | CA |
| 2015-02-10 | 760-442-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2015-02-10 | 760-442-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2015-02-10 | 760-442-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2015-02-10 | 818-805-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CANOGAPARK | 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.