NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

69 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
T-MOBILE USA, INC. 69
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2010-02-08 435-251-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-256-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-272-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-272-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-275-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-767-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-767-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-767-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-767-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 435-767-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST GEORGE UT
2010-02-08 559-339-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTERVL CA
2010-02-08 626-863-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-02-08 626-863-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-02-08 650-741-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2010-02-08 801-724-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2010-02-08 801-762-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2010-02-08 801-854-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2010-02-04 415-937-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2010-02-04 916-544-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2010-02-03 619-761-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2010-02-03 916-538-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2010-02-02 254-743-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TEMPLE TX
2010-02-02 254-743-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TEMPLE TX
2010-02-02 510-313-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HRCUL-RODE CA
2010-02-02 806-421-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DUMAS TX
2010-01-29 801-317-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2010-01-29 801-317-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2010-01-29 801-317-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2010-01-29 801-317-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2010-01-26 520-208-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2010-01-26 815-575-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2010-01-25 503-583-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2010-01-25 503-902-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2010-01-25 505-614-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ESPANOLA NM
2010-01-25 682-239-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2010-01-25 714-818-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2010-01-25 714-818-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2010-01-22 760-501-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2010-01-22 817-901-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2010-01-22 817-901-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2010-01-22 817-901-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2010-01-22 817-901-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2010-01-21 626-371-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-01-20 214-609-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2010-01-20 214-609-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2010-01-20 214-609-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2010-01-20 214-609-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2010-01-20 214-609-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2010-01-20 214-609-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2010-01-19 440-269-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WILLOUGHBY OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.