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
2004-03-23 951-541-1XXX T-MOBILE USA, INC. 6529 TEMECULA CA
2004-03-23 951-541-7XXX T-MOBILE USA, INC. 6529 TEMECULA CA
2004-03-23 951-582-1XXX T-MOBILE USA, INC. 6529 CORONA CA
2004-03-22 541-610-8XXX T-MOBILE USA, INC. 6529 BEND OR
2004-03-19 408-603-3XXX T-MOBILE USA, INC. 6529 CAMPBELL CA
2004-03-19 408-603-4XXX T-MOBILE USA, INC. 6529 CAMPBELL CA
2004-03-19 916-529-7XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2004-03-18 951-375-8XXX T-MOBILE USA, INC. 6529 TEMECULA CA
2004-03-18 951-375-9XXX T-MOBILE USA, INC. 6529 TEMECULA CA
2004-03-17 415-318-6XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-03-17 415-359-8XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-03-17 559-473-5XXX T-MOBILE USA, INC. 6529 FRESNO CA
2004-03-17 626-679-0XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-03-17 626-679-8XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-03-17 708-698-2XXX T-MOBILE USA, INC. 6529 LA GRANGE IL
2004-03-17 773-577-7XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-03-17 773-577-9XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-03-17 805-284-2XXX T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-03-16 432-978-7XXX T-MOBILE USA, INC. 6529 TERMINAL TX
2004-03-16 618-698-2XXX T-MOBILE USA, INC. 6529 BELLEVILLE IL
2004-03-15 208-695-7XXX T-MOBILE USA, INC. 6529 BOISE ID
2004-03-15 509-594-9XXX T-MOBILE USA, INC. 6529 YAKIMA WA
2004-03-15 575-442-8XXX T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2004-03-15 580-230-8XXX T-MOBILE USA, INC. 6529 DURANT OK
2004-03-15 630-639-2XXX T-MOBILE USA, INC. 6529 W CHICAGO IL
2004-03-15 719-369-3XXX T-MOBILE USA, INC. 6529 PUEBLO CO
2004-03-15 801-735-2XXX T-MOBILE USA, INC. 6529 PROVO UT
2004-03-15 909-450-7XXX T-MOBILE USA, INC. 6529 CLAREMONT CA
2004-03-15 970-201-8XXX T-MOBILE USA, INC. 6529 GRAND JCT CO
2004-03-15 971-237-8XXX T-MOBILE USA, INC. 6529 MCMINNVL OR
2004-03-12 520-250-3XXX T-MOBILE USA, INC. 6529 TUCSON AZ
2004-03-12 909-524-5XXX T-MOBILE USA, INC. 6529 POMONA CA
2004-03-12 909-524-6XXX T-MOBILE USA, INC. 6529 POMONA CA
2004-03-12 909-524-7XXX T-MOBILE USA, INC. 6529 POMONA CA
2004-03-11 309-312-0XXX T-MOBILE USA, INC. 6529 KEWANEE IL
2004-03-11 480-776-4XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-03-11 505-718-8XXX T-MOBILE USA, INC. 6529 LAS VEGAS NM
2004-03-11 575-317-5XXX T-MOBILE USA, INC. 6529 ROSWELL NM
2004-03-11 928-208-2XXX T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2004-03-10 325-245-6XXX T-MOBILE USA, INC. 6529 SAN ANGELO TX
2004-03-10 330-307-2XXX T-MOBILE USA, INC. 6529 WARREN OH
2004-03-10 509-868-3XXX T-MOBILE USA, INC. 6529 SPOKANE WA
2004-03-10 573-586-6XXX T-MOBILE USA, INC. 6529 FTLENARDWD MO
2004-03-10 806-577-5XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-03-09 254-220-9XXX T-MOBILE USA, INC. 6529 KILLEEN TX
2004-03-09 469-474-8XXX T-MOBILE USA, INC. 6529 TERRELL TX
2004-03-09 630-392-5XXX T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-03-09 630-615-0XXX T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-03-09 630-615-1XXX T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-03-09 630-615-8XXX T-MOBILE USA, INC. 6529 NAPERVILLE 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.