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
2023-12-04 279-248-7XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-04 279-248-8XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-04 279-248-9XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-04 424-498-0XXX T-MOBILE USA, INC. 6529 HAWTHORNE CA
2023-12-04 424-498-1XXX T-MOBILE USA, INC. 6529 HAWTHORNE CA
2023-12-04 424-498-9XXX T-MOBILE USA, INC. 6529 HAWTHORNE CA
2023-12-04 510-312-8XXX T-MOBILE USA, INC. 6529 CROCKETT CA
2023-12-04 510-312-9XXX T-MOBILE USA, INC. 6529 CROCKETT CA
2023-12-04 541-675-7XXX T-MOBILE USA, INC. 6529 MADRAS OR
2023-12-04 657-709-0XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 657-709-1XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 657-709-2XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 657-709-3XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 657-709-4XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 657-709-5XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 657-709-9XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-12-04 831-664-4XXX T-MOBILE USA, INC. 6529 HOLLISTER CA
2023-12-04 831-664-5XXX T-MOBILE USA, INC. 6529 HOLLISTER CA
2023-12-04 951-648-7XXX T-MOBILE USA, INC. 6529 WOODCREST CA
2023-12-04 951-705-2XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-705-3XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-705-4XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-705-5XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-705-6XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-705-7XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-705-9XXX T-MOBILE USA, INC. 6529 MORENO CA
2023-12-04 951-706-9XXX T-MOBILE USA, INC. 6529 WOODCREST CA
2023-12-04 951-709-6XXX T-MOBILE USA, INC. 6529 MURRIETA CA
2023-12-04 951-709-9XXX T-MOBILE USA, INC. 6529 MURRIETA CA
2023-12-04 971-326-7XXX T-MOBILE USA, INC. 6529 SEASIDE OR
2023-12-04 971-474-6XXX T-MOBILE USA, INC. 6529 WOODBURN OR
2023-12-04 971-474-9XXX T-MOBILE USA, INC. 6529 WOODBURN OR
2023-12-04 971-475-9XXX T-MOBILE USA, INC. 6529 SEASIDE OR
2023-12-01 279-229-3XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-01 279-229-5XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-01 279-229-6XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-01 279-229-7XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-01 279-229-9XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-01 279-241-5XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-12-01 307-428-9XXX T-MOBILE USA, INC. 6529 DOUGLAS WY
2023-12-01 310-810-9XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-12-01 326-777-9XXX T-MOBILE USA, INC. 6529 GEORGETOWN OH
2023-12-01 406-849-9XXX T-MOBILE USA, INC. 6529 ELMO MT
2023-12-01 424-496-0XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-12-01 424-496-1XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-12-01 424-496-2XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-12-01 440-470-2XXX T-MOBILE USA, INC. 6529 ASHTABULA OH
2023-12-01 440-470-3XXX T-MOBILE USA, INC. 6529 ASHTABULA OH
2023-12-01 559-874-5XXX T-MOBILE USA, INC. 6529 CLOVIS CA
2023-12-01 559-874-6XXX T-MOBILE USA, INC. 6529 CLOVIS 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.