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
2004-12-20 815-823-9XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-12-20 909-753-5XXX T-MOBILE USA, INC. 6529 CLAREMONT CA
2004-12-20 916-475-9XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2004-12-20 925-301-5XXX T-MOBILE USA, INC. 6529 ANTIOCH CA
2004-12-20 925-922-7XXX T-MOBILE USA, INC. 6529 PLEASANTON CA
2004-12-17 206-407-4XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2004-12-17 562-215-3XXX T-MOBILE USA, INC. 6529 NORWALK CA
2004-12-17 562-228-3XXX T-MOBILE USA, INC. 6529 NORWALK CA
2004-12-17 626-208-7XXX T-MOBILE USA, INC. 6529 AZUSA CA
2004-12-17 630-379-2XXX T-MOBILE USA, INC. 6529 ELMHURST IL
2004-12-17 630-618-0XXX T-MOBILE USA, INC. 6529 AURORA IL
2004-12-17 714-261-7XXX T-MOBILE USA, INC. 6529 YORBALINDA CA
2004-12-17 818-272-4XXX T-MOBILE USA, INC. 6529 SNFN PACM CA
2004-12-17 847-693-6XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2004-12-17 909-743-0XXX T-MOBILE USA, INC. 6529 FONTANA CA
2004-12-17 909-743-1XXX T-MOBILE USA, INC. 6529 FONTANA CA
2004-12-17 951-623-0XXX T-MOBILE USA, INC. 6529 PERRIS CA
2004-12-16 219-951-5XXX T-MOBILE USA, INC. 6529 GARY IN
2004-12-16 224-210-4XXX T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-12-16 312-506-7XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-12-16 323-271-6XXX T-MOBILE USA, INC. 6529 MONTEBELLO CA
2004-12-16 323-271-7XXX T-MOBILE USA, INC. 6529 MONTEBELLO CA
2004-12-16 541-310-7XXX T-MOBILE USA, INC. 6529 PENDLETON OR
2004-12-16 541-310-8XXX T-MOBILE USA, INC. 6529 PENDLETON OR
2004-12-16 630-278-0XXX T-MOBILE USA, INC. 6529 ROSELLE IL
2004-12-16 630-278-1XXX T-MOBILE USA, INC. 6529 ROSELLE IL
2004-12-16 702-358-2XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-12-16 708-698-3XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-12-16 708-698-4XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-12-16 708-698-6XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-12-16 708-698-7XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-12-16 708-698-8XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-12-16 719-214-7XXX T-MOBILE USA, INC. 6529 PUEBLO CO
2004-12-16 773-503-1XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-2XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-3XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-4XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-5XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-6XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-7XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 773-503-8XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-12-16 859-628-9XXX T-MOBILE USA, INC. 6529 COVINGTON KY
2004-12-16 909-810-8XXX T-MOBILE USA, INC. 6529 MENTONE CA
2004-12-16 970-313-3XXX T-MOBILE USA, INC. 6529 GREELEY CO
2004-12-15 217-750-2XXX T-MOBILE USA, INC. 6529 LINCOLN IL
2004-12-15 219-810-2XXX T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-3XXX T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-4XXX T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 219-810-5XXX T-MOBILE USA, INC. 6529 GARY IN
2004-12-15 314-596-8XXX T-MOBILE USA, INC. 6529 KIRKWOOD MO

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.