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
2004-03-29 773-310-2XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 773-310-3XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 773-310-5XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 773-310-6XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 773-310-7XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 773-310-8XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 773-310-9XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2004-03-29 805-815-2XXX T-MOBILE USA, INC. 6529 OXNARD CA
2004-03-29 814-746-8XXX T-MOBILE USA, INC. 6529 ERIE PA
2004-03-29 928-257-2XXX T-MOBILE USA, INC. 6529 YUMA AZ
2004-03-29 928-542-8XXX T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2004-03-26 330-307-0XXX T-MOBILE USA, INC. 6529 WARREN OH
2004-03-25 209-752-8XXX T-MOBILE USA, INC. 6529 LOS BANOS CA
2004-03-25 323-606-3XXX T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2004-03-25 408-717-3XXX T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2004-03-25 510-709-8XXX T-MOBILE USA, INC. 6529 FRNK MAIN CA
2004-03-25 619-471-4XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-03-25 619-471-5XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-03-25 619-471-6XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-03-25 619-471-7XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-03-25 626-376-6XXX T-MOBILE USA, INC. 6529 PSDN PSDN CA
2004-03-25 630-299-9XXX T-MOBILE USA, INC. 6529 AURORA IL
2004-03-25 847-406-7XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2004-03-25 916-346-9XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2004-03-24 219-210-8XXX T-MOBILE USA, INC. 6529 MICHIGANCY IN
2004-03-24 310-707-3XXX T-MOBILE USA, INC. 6529 SAN PEDRO CA
2004-03-24 314-596-6XXX T-MOBILE USA, INC. 6529 KIRKWOOD MO
2004-03-24 580-647-8XXX T-MOBILE USA, INC. 6529 LAWTON OK
2004-03-24 608-397-5XXX T-MOBILE USA, INC. 6529 LA CROSSE WI
2004-03-24 636-373-1XXX T-MOBILE USA, INC. 6529 ST CHARLES MO
2004-03-24 661-674-8XXX T-MOBILE USA, INC. 6529 LANCASTER CA
2004-03-24 702-413-2XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-03-24 702-413-3XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-03-24 775-219-5XXX T-MOBILE USA, INC. 6529 RENO NV
2004-03-24 806-223-9XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2004-03-24 858-373-8XXX T-MOBILE USA, INC. 6529 LA JOLLA CA
2004-03-24 903-275-6XXX T-MOBILE USA, INC. 6529 ATHENS TX
2004-03-24 920-471-6XXX T-MOBILE USA, INC. 6529 GREEN BAY WI
2004-03-23 310-254-7XXX T-MOBILE USA, INC. 6529 W ANGELES CA
2004-03-23 323-307-1XXX T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2004-03-23 503-453-0XXX T-MOBILE USA, INC. 6529 PORTLAND OR
2004-03-23 503-473-6XXX T-MOBILE USA, INC. 6529 PORTLAND OR
2004-03-23 503-484-4XXX T-MOBILE USA, INC. 6529 PORTLAND OR
2004-03-23 714-391-0XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2004-03-23 805-204-8XXX T-MOBILE USA, INC. 6529 OXNARD CA
2004-03-23 818-257-5XXX T-MOBILE USA, INC. 6529 VAN NUYS CA
2004-03-23 818-257-6XXX T-MOBILE USA, INC. 6529 VAN NUYS CA
2004-03-23 909-434-4XXX T-MOBILE USA, INC. 6529 FONTANA CA
2004-03-23 909-568-4XXX T-MOBILE USA, INC. 6529 CLAREMONT CA
2004-03-23 949-201-6XXX T-MOBILE USA, INC. 6529 CAPITRNVLY 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.