NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

66 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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. 66
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
2006-10-04 480-406-1XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-10-04 574-209-8XXX T-MOBILE USA, INC. 6529 BREMEN IN
2006-10-04 574-356-8XXX T-MOBILE USA, INC. 6529 NAPPANEE IN
2006-10-04 636-866-4XXX T-MOBILE USA, INC. 6529 ST CHARLES MO
2006-10-04 636-866-5XXX T-MOBILE USA, INC. 6529 ST CHARLES MO
2006-10-04 641-210-5XXX T-MOBILE USA, INC. 6529 MASON CITY IA
2006-10-04 661-874-3XXX T-MOBILE USA, INC. 6529 LANCASTER CA
2006-10-04 720-278-4XXX T-MOBILE USA, INC. 6529 DENVER CO
2006-10-04 720-278-5XXX T-MOBILE USA, INC. 6529 DENVER CO
2006-10-04 720-278-6XXX T-MOBILE USA, INC. 6529 DENVER CO
2006-10-04 909-670-7XXX T-MOBILE USA, INC. 6529 CLAREMONT CA
2006-10-04 909-670-8XXX T-MOBILE USA, INC. 6529 CLAREMONT CA
2006-10-03 209-670-7XXX T-MOBILE USA, INC. 6529 STOCKTON CA
2006-10-03 310-651-4XXX T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2006-10-03 310-817-1XXX T-MOBILE USA, INC. 6529 CMTN GRDN CA
2006-10-03 310-817-3XXX T-MOBILE USA, INC. 6529 CMTN GRDN CA
2006-10-03 310-926-2XXX T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2006-10-03 323-875-6XXX T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2006-10-03 360-584-0XXX T-MOBILE USA, INC. 6529 OLYMPIA WA
2006-10-03 515-339-2XXX T-MOBILE USA, INC. 6529 DES MOINES IA
2006-10-03 515-339-3XXX T-MOBILE USA, INC. 6529 DES MOINES IA
2006-10-03 562-303-6XXX T-MOBILE USA, INC. 6529 LAKEWOOD CA
2006-10-03 818-336-2XXX T-MOBILE USA, INC. 6529 SNFN SNFN CA
2006-10-03 818-336-7XXX T-MOBILE USA, INC. 6529 SNFN SNFN CA
2006-10-03 818-669-4XXX T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-10-03 818-669-5XXX T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-10-03 951-570-0XXX T-MOBILE USA, INC. 6529 PERRIS CA
2006-10-03 951-570-1XXX T-MOBILE USA, INC. 6529 PERRIS CA
2006-10-03 951-570-2XXX T-MOBILE USA, INC. 6529 PERRIS CA
2006-10-03 951-570-3XXX T-MOBILE USA, INC. 6529 PERRIS CA
2006-10-03 951-570-4XXX T-MOBILE USA, INC. 6529 PERRIS CA
2006-10-02 330-294-8XXX T-MOBILE USA, INC. 6529 AKRON OH
2006-10-02 505-816-8XXX T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2006-10-02 513-488-2XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2006-10-02 513-488-3XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2006-10-02 513-488-4XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2006-10-02 513-488-5XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2006-10-02 513-488-6XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2006-10-02 513-488-7XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2006-10-02 515-339-0XXX T-MOBILE USA, INC. 6529 DES MOINES IA
2006-10-02 618-579-7XXX T-MOBILE USA, INC. 6529 MARION IL
2006-10-02 630-770-4XXX T-MOBILE USA, INC. 6529 AURORA IL
2006-10-02 801-403-0XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-10-02 801-403-1XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-10-02 801-502-0XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-10-02 801-502-1XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-10-02 801-678-5XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2006-10-02 801-734-0XXX T-MOBILE USA, INC. 6529 PROVO UT
2006-10-02 928-225-1XXX T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2006-09-29 314-249-2XXX T-MOBILE USA, INC. 6529 LADUE MO

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.