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
2023-07-12 840-216-6XXX T-MOBILE USA, INC. 6529 ARROWHEAD CA
2023-07-12 840-220-7XXX T-MOBILE USA, INC. 6529 RIALTO CA
2023-07-12 840-220-8XXX T-MOBILE USA, INC. 6529 RIALTO CA
2023-07-12 925-878-6XXX T-MOBILE USA, INC. 6529 LAFAYETTE CA
2023-07-12 949-386-3XXX T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2023-07-12 951-590-7XXX T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-07-12 951-590-8XXX T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-07-12 951-630-6XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-07-12 951-630-7XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-07-05 326-209-0XXX T-MOBILE USA, INC. 6529 NEWCARLISL OH
2023-06-28 814-665-2XXX T-MOBILE USA, INC. 6529 CORRY PA
2023-06-27 405-978-4XXX T-MOBILE USA, INC. 6529 BETHANY OK
2023-06-27 405-978-5XXX T-MOBILE USA, INC. 6529 BETHANY OK
2023-06-27 405-978-6XXX T-MOBILE USA, INC. 6529 BETHANY OK
2023-06-27 405-978-7XXX T-MOBILE USA, INC. 6529 BETHANY OK
2023-06-27 815-859-6XXX T-MOBILE USA, INC. 6529 ROCHELLE IL
2023-06-27 815-859-7XXX T-MOBILE USA, INC. 6529 ROCHELLE IL
2023-06-26 479-201-0XXX T-MOBILE USA, INC. 6529 FORT SMITH AR
2023-06-26 479-496-7XXX T-MOBILE USA, INC. 6529 FORT SMITH AR
2023-06-26 479-649-6XXX T-MOBILE USA, INC. 6529 FORT SMITH AR
2023-06-26 501-946-4XXX T-MOBILE USA, INC. 6529 BENTON AR
2023-06-26 501-946-5XXX T-MOBILE USA, INC. 6529 BENTON AR
2023-06-26 501-946-6XXX T-MOBILE USA, INC. 6529 BENTON AR
2023-06-20 945-296-0XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-1XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-2XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-3XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-4XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-5XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-6XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-20 945-296-9XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-16 253-434-0XXX T-MOBILE USA, INC. 6529 PUYALLUP WA
2023-06-16 253-434-1XXX T-MOBILE USA, INC. 6529 PUYALLUP WA
2023-06-16 253-434-6XXX T-MOBILE USA, INC. 6529 PUYALLUP WA
2023-06-16 360-324-7XXX T-MOBILE USA, INC. 6529 CHEHALIS WA
2023-06-16 425-725-9XXX T-MOBILE USA, INC. 6529 HALLS LAKE WA
2023-06-16 509-450-3XXX T-MOBILE USA, INC. 6529 EPHRATA WA
2023-06-16 509-450-5XXX T-MOBILE USA, INC. 6529 EPHRATA WA
2023-06-15 213-657-4XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-06-15 213-657-7XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-06-15 213-657-8XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-06-15 213-657-9XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-06-15 279-237-6XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-06-15 279-237-7XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-06-15 279-237-8XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-06-15 279-237-9XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-06-15 424-491-9XXX T-MOBILE USA, INC. 6529 HAWTHORNE CA
2023-06-15 442-433-2XXX T-MOBILE USA, INC. 6529 BRAWLEY CA
2023-06-15 442-451-6XXX T-MOBILE USA, INC. 6529 YUCCA VLY CA
2023-06-15 442-646-3XXX T-MOBILE USA, INC. 6529 BRAWLEY CA

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.