NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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. 76
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
AssignedBlockAssigneeOCNRate centerState
2005-09-07 626-224-7XXX T-MOBILE USA, INC. 6529 AZUSA CA
2005-09-07 626-271-6XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2005-09-07 661-316-2XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2005-09-07 714-600-7XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-07 858-357-4XXX T-MOBILE USA, INC. 6529 SNDG MRMS CA
2005-09-06 206-218-2XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-06 206-218-4XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-06 206-370-4XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-06 253-266-3XXX T-MOBILE USA, INC. 6529 AUBURN WA
2005-09-06 310-359-3XXX T-MOBILE USA, INC. 6529 MALIBU CA
2005-09-06 310-359-5XXX T-MOBILE USA, INC. 6529 MALIBU CA
2005-09-06 314-659-7XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-09-06 314-783-6XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-09-06 314-783-7XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-09-06 323-352-4XXX T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2005-09-06 323-352-6XXX T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2005-09-06 425-223-8XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2005-09-06 425-463-8XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2005-09-06 425-463-9XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2005-09-06 425-533-1XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2005-09-06 562-324-1XXX T-MOBILE USA, INC. 6529 WHITTIER CA
2005-09-06 619-756-0XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-09-06 619-938-5XXX T-MOBILE USA, INC. 6529 EL CAJON CA
2005-09-06 620-708-1XXX T-MOBILE USA, INC. 6529 HUTCHINSON KS
2005-09-06 620-708-2XXX T-MOBILE USA, INC. 6529 HUTCHINSON KS
2005-09-06 626-321-1XXX T-MOBILE USA, INC. 6529 ARCADIA CA
2005-09-06 626-321-8XXX T-MOBILE USA, INC. 6529 ARCADIA CA
2005-09-06 626-329-9XXX T-MOBILE USA, INC. 6529 EL MONTE CA
2005-09-06 760-215-4XXX T-MOBILE USA, INC. 6529 ESCONDIDO CA
2005-09-06 805-204-1XXX T-MOBILE USA, INC. 6529 OXNARD CA
2005-09-06 818-263-0XXX T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-09-06 909-348-2XXX T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2005-09-06 909-348-3XXX T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2005-09-06 909-573-2XXX T-MOBILE USA, INC. 6529 CHINO CA
2005-09-06 916-218-9XXX T-MOBILE USA, INC. 6529 RSVL MAIN CA
2005-09-06 916-273-2XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2005-09-06 949-241-0XXX T-MOBILE USA, INC. 6529 IRVINE CA
2005-09-02 480-457-9XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 480-735-1XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 480-735-8XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 480-754-9XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 503-758-0XXX T-MOBILE USA, INC. 6529 PORTLAND OR
2005-09-02 503-758-1XXX T-MOBILE USA, INC. 6529 PORTLAND OR
2005-09-02 520-264-6XXX T-MOBILE USA, INC. 6529 NOGALES AZ
2005-09-02 541-813-9XXX T-MOBILE USA, INC. 6529 BROOKINGS OR
2005-09-02 702-448-0XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-09-02 708-355-1XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2005-09-02 720-251-0XXX T-MOBILE USA, INC. 6529 DENVER CO
2005-09-02 720-251-3XXX T-MOBILE USA, INC. 6529 DENVER CO
2005-09-02 775-345-4XXX T-MOBILE USA, INC. 6529 RENO NV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.