NumberResearch Membership · Data 2026-04

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 2026-04

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
2023-12-01 559-874-7XXX T-MOBILE USA, INC. 6529 CLOVIS CA
2023-12-01 559-874-8XXX T-MOBILE USA, INC. 6529 CLOVIS CA
2023-12-01 559-874-9XXX T-MOBILE USA, INC. 6529 CLOVIS CA
2023-12-01 626-530-2XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-12-01 626-530-3XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-12-01 626-530-4XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-12-01 626-530-5XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-12-01 626-530-6XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-12-01 657-708-7XXX T-MOBILE USA, INC. 6529 PLACENTIA CA
2023-12-01 657-708-8XXX T-MOBILE USA, INC. 6529 PLACENTIA CA
2023-12-01 661-595-7XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-596-3XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-596-4XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-596-8XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-612-2XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-612-3XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-612-4XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-612-5XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-612-6XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 661-612-7XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2023-12-01 747-323-6XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-12-01 747-323-7XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-12-01 747-323-8XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-12-01 747-323-9XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-12-01 840-688-0XXX T-MOBILE USA, INC. 6529 CRESTLINE CA
2023-12-01 840-688-1XXX T-MOBILE USA, INC. 6529 CRESTLINE CA
2023-12-01 920-970-8XXX T-MOBILE USA, INC. 6529 FONDDU LAC WI
2023-11-30 385-551-0XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-551-1XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-560-4XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-560-5XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-560-6XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-560-7XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-560-8XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-30 385-560-9XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-11-29 309-502-3XXX T-MOBILE USA, INC. 6529 GENESEO IL
2023-11-22 213-759-3XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-22 213-759-4XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-22 213-759-5XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-22 213-759-6XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-22 213-759-7XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-22 213-759-8XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-22 213-759-9XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2023-11-21 213-329-2XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-11-21 213-329-9XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-11-21 213-609-3XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-11-21 213-609-4XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-11-21 213-665-0XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-11-21 213-665-1XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-11-21 213-665-2XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.