NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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. 68
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
2016-12-05 636-312-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2016-12-05 636-317-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HARVESTER MO
2016-12-05 715-302-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WAUSAU WI
2016-12-05 715-302-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WAUSAU WI
2016-12-02 234-978-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HARTVILLE OH
2016-12-02 330-621-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WOOSTER OH
2016-12-02 330-621-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WOOSTER OH
2016-12-02 330-795-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NEWPHLDLPH OH
2016-12-02 440-265-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CONNEAUT OH
2016-12-02 567-284-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2016-12-02 937-990-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 XENIA OH
2016-12-01 385-266-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2016-12-01 385-266-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2016-11-30 425-382-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2016-11-30 510-241-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2016-11-30 539-424-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2016-11-30 626-495-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2016-11-30 626-495-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2016-11-30 626-495-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2016-11-30 626-495-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2016-11-30 626-632-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2016-11-30 661-593-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNCA NHCS CA
2016-11-29 619-514-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2016-11-28 206-502-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-11-28 206-502-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-11-28 209-203-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2016-11-28 209-237-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2016-11-28 209-280-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LODI CA
2016-11-28 209-621-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HUGHSON CA
2016-11-28 323-713-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-713-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-713-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-781-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-831-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2016-11-28 323-961-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2016-11-28 323-986-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2016-11-28 323-986-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2016-11-28 360-503-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2016-11-28 360-728-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2016-11-28 360-763-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2016-11-28 385-289-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2016-11-28 385-482-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2016-11-28 425-659-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2016-11-28 442-295-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARSTOW CA
2016-11-28 442-297-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2016-11-28 505-347-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2016-11-28 505-347-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2016-11-28 559-207-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2016-11-28 559-371-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FRESNO CA
2016-11-28 559-653-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FOWLER CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.