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
2004-02-13 773-870-9XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-13 773-957-3XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-13 773-957-4XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-13 870-413-8XXX T-MOBILE USA, INC. 6529 PINE BLUFF AR
2004-02-13 951-956-5XXX T-MOBILE USA, INC. 6529 PERRIS CA
2004-02-12 408-904-8XXX T-MOBILE USA, INC. 6529 SNJS NORTH CA
2004-02-12 847-770-7XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-02-12 847-770-8XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-02-12 847-770-9XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-02-12 858-213-2XXX T-MOBILE USA, INC. 6529 POWAY CA
2004-02-12 903-330-9XXX T-MOBILE USA, INC. 6529 TYLER TX
2004-02-11 254-733-3XXX T-MOBILE USA, INC. 6529 WACO TX
2004-02-11 608-217-0XXX T-MOBILE USA, INC. 6529 MADISON WI
2004-02-11 619-215-3XXX T-MOBILE USA, INC. 6529 CORONADO CA
2004-02-11 619-215-4XXX T-MOBILE USA, INC. 6529 CORONADO CA
2004-02-11 619-319-2XXX T-MOBILE USA, INC. 6529 CORONADO CA
2004-02-11 636-236-3XXX T-MOBILE USA, INC. 6529 CHESTERFLD MO
2004-02-11 636-373-2XXX T-MOBILE USA, INC. 6529 ST CHARLES MO
2004-02-10 801-358-2XXX T-MOBILE USA, INC. 6529 PROVO UT
2004-02-10 814-746-9XXX T-MOBILE USA, INC. 6529 ERIE PA
2004-02-09 312-476-0XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-02-09 312-521-3XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-02-09 702-352-6XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-02-09 702-352-7XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-02-09 815-823-2XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-02-09 815-823-3XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-02-09 815-823-4XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-02-09 815-823-5XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-02-06 630-523-3XXX T-MOBILE USA, INC. 6529 ROSELLE IL
2004-02-06 630-523-4XXX T-MOBILE USA, INC. 6529 ROSELLE IL
2004-02-06 708-536-0XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-536-3XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-536-8XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-574-0XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-02-06 708-639-6XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-02-06 708-662-0XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-781-3XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-781-5XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-781-6XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-781-8XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-845-0XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 708-845-1XXX T-MOBILE USA, INC. 6529 TINLEYPARK IL
2004-02-06 773-653-0XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-1XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-3XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-5XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-6XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-7XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-8XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-02-06 773-653-9XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL

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.