NumberResearch Membership · Data 09/27/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/27/2026

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
2014-03-19 872-252-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-252-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-252-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-252-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-252-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-252-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-706-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-19 872-707-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-18 209-276-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2014-03-18 253-259-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2014-03-18 323-736-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2014-03-18 323-736-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2014-03-18 360-488-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2014-03-18 415-316-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2014-03-18 415-712-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2014-03-18 435-919-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRIGHAM CY UT
2014-03-18 520-213-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2014-03-18 541-936-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALBANY OR
2014-03-18 559-387-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2014-03-18 661-447-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2014-03-18 714-947-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CYPRESS CA
2014-03-18 775-409-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RENO NV
2014-03-18 928-278-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2014-03-18 951-376-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2014-03-17 209-666-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2014-03-17 217-953-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 217-953-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 217-953-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 217-953-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2014-03-17 312-566-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2014-03-17 312-843-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2014-03-17 312-843-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL

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.