NumberResearch Membership · Data 09/23/2026

Recent thousands-block assignments

59 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026

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. 59
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
2007-10-05 253-324-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2007-10-05 405-312-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-10-05 405-431-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-10-05 405-431-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-10-05 425-583-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-10-05 425-583-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-10-05 425-583-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-10-05 425-583-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-10-05 425-583-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-10-05 440-994-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2007-10-05 541-295-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANTSPASS OR
2007-10-05 541-295-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANTSPASS OR
2007-10-05 773-629-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-10-05 773-946-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-10-05 773-946-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-10-05 773-946-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-10-05 773-946-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-10-04 424-236-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2007-10-04 424-558-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TORRANCE CA
2007-10-04 435-237-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRIGHAM CY UT
2007-10-04 714-880-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BUENA PARK CA
2007-10-04 719-434-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 COLORDOSPG CO
2007-10-04 760-670-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2007-10-03 214-516-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-516-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-516-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-516-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-516-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-518-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-518-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-518-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-518-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-518-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-604-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 214-604-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-10-03 559-394-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FRESNO CA
2007-10-03 626-382-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-10-03 661-394-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2007-10-03 661-998-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PLDL PLDL CA
2007-10-03 720-490-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-10-03 720-490-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-10-03 720-579-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-10-03 801-513-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2007-10-03 801-822-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2007-10-03 808-693-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2007-10-03 916-494-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2007-10-03 916-509-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2007-10-02 309-706-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2007-10-01 224-343-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-10-01 224-343-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.