NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

66 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. 66
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
2022-01-09 971-374-4XXX T-MOBILE USA, INC. 6529 SALEM OR
2022-01-09 971-382-8XXX T-MOBILE USA, INC. 6529 SALEM OR
2022-01-09 971-398-6XXX T-MOBILE USA, INC. 6529 SALEM OR
2022-01-09 971-406-6XXX T-MOBILE USA, INC. 6529 WOODBURN OR
2022-01-08 217-500-6XXX T-MOBILE USA, INC. 6529 EFFINGHAM IL
2022-01-08 217-708-6XXX T-MOBILE USA, INC. 6529 EFFINGHAM IL
2022-01-08 224-455-0XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2022-01-08 224-455-1XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2022-01-08 224-455-2XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2022-01-08 224-455-4XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2022-01-08 260-977-0XXX T-MOBILE USA, INC. 6529 LAGRANGE IN
2022-01-08 309-315-0XXX T-MOBILE USA, INC. 6529 GALESBURG IL
2022-01-08 309-315-1XXX T-MOBILE USA, INC. 6529 GALESBURG IL
2022-01-08 309-315-8XXX T-MOBILE USA, INC. 6529 GALESBURG IL
2022-01-08 309-612-3XXX T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2022-01-08 309-612-4XXX T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2022-01-08 309-612-5XXX T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2022-01-08 309-612-6XXX T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2022-01-08 309-612-7XXX T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2022-01-08 309-612-8XXX T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2022-01-08 331-282-5XXX T-MOBILE USA, INC. 6529 HINSDALE IL
2022-01-08 331-282-6XXX T-MOBILE USA, INC. 6529 HINSDALE IL
2022-01-08 575-270-5XXX T-MOBILE USA, INC. 6529 LAS CRUCES NM
2022-01-08 575-270-6XXX T-MOBILE USA, INC. 6529 LAS CRUCES NM
2022-01-08 575-270-7XXX T-MOBILE USA, INC. 6529 LAS CRUCES NM
2022-01-08 708-901-0XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-1XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-2XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-3XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-4XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-5XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-6XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-7XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 708-901-8XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2022-01-08 725-253-1XXX T-MOBILE USA, INC. 6529 MESQUITE NV
2022-01-08 928-430-7XXX T-MOBILE USA, INC. 6529 SOMERTON AZ
2022-01-08 928-430-8XXX T-MOBILE USA, INC. 6529 SOMERTON AZ
2022-01-07 206-746-8XXX T-MOBILE USA, INC. 6529 BAINBDG IS WA
2022-01-07 206-746-9XXX T-MOBILE USA, INC. 6529 BAINBDG IS WA
2022-01-07 208-637-4XXX T-MOBILE USA, INC. 6529 POCATELLO ID
2022-01-07 208-637-5XXX T-MOBILE USA, INC. 6529 POCATELLO ID
2022-01-07 213-649-5XXX T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2022-01-07 213-649-6XXX T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2022-01-07 213-649-7XXX T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2022-01-07 213-649-8XXX T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2022-01-07 213-649-9XXX T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2022-01-07 253-349-4XXX T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-5XXX T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-6XXX T-MOBILE USA, INC. 6529 AUBURN WA
2022-01-07 253-349-7XXX T-MOBILE USA, INC. 6529 AUBURN WA

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.