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
2004-05-28 520-661-0XXX T-MOBILE USA, INC. 6529 TUCSON AZ
2004-05-28 530-216-6XXX T-MOBILE USA, INC. 6529 MARYSVILLE CA
2004-05-28 636-290-6XXX T-MOBILE USA, INC. 6529 TROY MO
2004-05-28 636-290-8XXX T-MOBILE USA, INC. 6529 TROY MO
2004-05-28 719-369-1XXX T-MOBILE USA, INC. 6529 PUEBLO CO
2004-05-28 719-369-5XXX T-MOBILE USA, INC. 6529 PUEBLO CO
2004-05-28 760-622-1XXX T-MOBILE USA, INC. 6529 OCSD OCSD CA
2004-05-28 760-622-2XXX T-MOBILE USA, INC. 6529 OCSD OCSD CA
2004-05-27 323-492-0XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2004-05-27 510-565-5XXX T-MOBILE USA, INC. 6529 FRNK MAIN CA
2004-05-27 619-781-2XXX T-MOBILE USA, INC. 6529 CHULAVISTA CA
2004-05-27 619-781-5XXX T-MOBILE USA, INC. 6529 CHULAVISTA CA
2004-05-27 619-781-6XXX T-MOBILE USA, INC. 6529 CHULAVISTA CA
2004-05-27 626-320-5XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-05-27 626-320-6XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-05-27 719-213-0XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2004-05-27 719-213-1XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2004-05-27 773-799-4XXX T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2004-05-27 806-577-1XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-05-27 806-577-2XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-05-27 870-824-8XXX T-MOBILE USA, INC. 6529 BLYTHEVL AR
2004-05-27 951-490-6XXX T-MOBILE USA, INC. 6529 PERRIS CA
2004-05-26 801-920-2XXX T-MOBILE USA, INC. 6529 OGDEN UT
2004-05-24 210-248-5XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-05-24 214-251-5XXX T-MOBILE USA, INC. 6529 DALLAS TX
2004-05-24 216-258-1XXX T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-05-24 330-412-8XXX T-MOBILE USA, INC. 6529 CANTON OH
2004-05-24 330-564-5XXX T-MOBILE USA, INC. 6529 AKRON OH
2004-05-24 360-622-6XXX T-MOBILE USA, INC. 6529 SAN JUAN WA
2004-05-24 469-396-6XXX T-MOBILE USA, INC. 6529 MCKINNEY TX
2004-05-24 469-742-1XXX T-MOBILE USA, INC. 6529 MCKINNEY TX
2004-05-24 509-714-8XXX T-MOBILE USA, INC. 6529 SPOKANE WA
2004-05-24 541-321-2XXX T-MOBILE USA, INC. 6529 JUNCTIONCY OR
2004-05-24 702-506-2XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-05-24 702-506-3XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-05-24 702-506-4XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2004-05-24 805-204-6XXX T-MOBILE USA, INC. 6529 OXNARD CA
2004-05-24 909-435-9XXX T-MOBILE USA, INC. 6529 REDLANDS CA
2004-05-21 209-534-0XXX T-MOBILE USA, INC. 6529 MODESTO CA
2004-05-21 213-210-1XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2004-05-21 213-210-8XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2004-05-21 323-286-3XXX T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2004-05-21 323-286-6XXX T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2004-05-21 408-207-5XXX T-MOBILE USA, INC. 6529 SNJS WEST CA
2004-05-21 408-571-8XXX T-MOBILE USA, INC. 6529 SNJS NORTH CA
2004-05-21 408-580-7XXX T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2004-05-21 415-568-0XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-05-21 559-347-8XXX T-MOBILE USA, INC. 6529 FRESNO CA
2004-05-21 562-394-5XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2004-05-21 562-394-6XXX T-MOBILE USA, INC. 6529 LONG BEACH 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.