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
2012-09-13 312-619-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2012-09-13 541-570-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LEBANON OR
2012-09-13 602-552-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-552-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 602-872-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-09-13 708-300-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2012-09-13 708-300-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2012-09-13 714-853-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FULLERTON CA
2012-09-13 801-919-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2012-09-13 805-305-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNLUSOBSPO CA
2012-09-13 818-408-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2012-09-13 818-698-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2012-09-13 818-743-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2012-09-12 559-517-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MADERA CA
2012-09-12 559-517-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MADERA CA
2012-09-12 562-551-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2012-09-12 682-206-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2012-09-12 682-206-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2012-09-12 682-206-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2012-09-12 909-705-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2012-09-12 915-215-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-215-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-215-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-215-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-215-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-500-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-500-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-12 915-500-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2012-09-11 219-213-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2012-09-11 515-351-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GOWRIE IA
2012-09-10 636-377-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WARRENTON MO
2012-09-10 669-777-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SUNNYVALE CA
2012-09-10 805-979-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2012-09-06 414-739-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2012-09-06 414-739-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2012-09-06 512-910-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2012-09-06 805-228-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2012-09-06 805-366-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2012-09-05 563-424-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DAVENPORT IA
2012-09-04 210-417-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-09-04 210-417-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-09-04 210-417-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-09-04 210-417-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-09-04 210-591-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX

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.