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
2015-03-12 858-262-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNDG LVTA CA
2015-03-12 916-695-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 916-695-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-03-12 951-447-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2015-03-11 254-661-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2015-03-11 254-661-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2015-03-11 254-987-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2015-03-11 254-987-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2015-03-11 708-981-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2015-03-11 708-981-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2015-03-10 442-229-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2015-03-10 661-534-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DELANO CA
2015-03-09 209-427-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2015-03-09 253-455-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2015-03-09 253-455-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2015-03-09 323-847-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2015-03-09 323-847-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2015-03-09 323-847-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2015-03-09 323-847-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2015-03-09 405-965-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2015-03-09 405-965-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2015-03-09 405-965-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2015-03-09 405-965-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2015-03-09 405-965-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2015-03-09 415-604-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2015-03-09 415-604-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2015-03-09 415-604-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2015-03-09 415-996-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IGNACIO CA
2015-03-09 424-301-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2015-03-09 424-301-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2015-03-09 424-391-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2015-03-09 424-391-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2015-03-09 424-391-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2015-03-09 424-391-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HAWTHORNE CA
2015-03-09 424-396-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2015-03-09 424-396-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2015-03-09 424-396-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2015-03-09 442-273-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2015-03-09 442-273-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2015-03-09 442-273-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2015-03-09 505-297-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GALLUP NM
2015-03-09 510-361-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA
2015-03-09 510-361-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA
2015-03-09 510-361-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA

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.