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
2023-10-13 820-837-6XXX T-MOBILE USA, INC. 6529 OXNARD CA
2023-10-13 820-837-7XXX T-MOBILE USA, INC. 6529 OXNARD CA
2023-10-13 820-837-8XXX T-MOBILE USA, INC. 6529 OXNARD CA
2023-10-13 820-837-9XXX T-MOBILE USA, INC. 6529 OXNARD CA
2023-10-13 951-648-8XXX T-MOBILE USA, INC. 6529 WOODCREST CA
2023-10-13 951-673-7XXX T-MOBILE USA, INC. 6529 HEMT SNJC CA
2023-10-13 951-673-8XXX T-MOBILE USA, INC. 6529 HEMT SNJC CA
2023-10-13 986-268-2XXX T-MOBILE USA, INC. 6529 BOISE ID
2023-10-13 986-268-3XXX T-MOBILE USA, INC. 6529 BOISE ID
2023-10-13 986-268-4XXX T-MOBILE USA, INC. 6529 BOISE ID
2023-10-13 986-268-5XXX T-MOBILE USA, INC. 6529 BOISE ID
2023-10-11 326-214-0XXX T-MOBILE USA, INC. 6529 FRANKLIN OH
2023-10-11 326-214-1XXX T-MOBILE USA, INC. 6529 FRANKLIN OH
2023-10-10 209-767-7XXX T-MOBILE USA, INC. 6529 ATWATER CA
2023-10-10 213-681-2XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-681-4XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-681-5XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-681-6XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-681-7XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-681-9XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-756-6XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-756-7XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-756-8XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 213-756-9XXX T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 307-301-9XXX T-MOBILE USA, INC. 6529 CASPER WY
2023-10-10 350-204-1XXX T-MOBILE USA, INC. 6529 ATWATER CA
2023-10-10 350-204-2XXX T-MOBILE USA, INC. 6529 ATWATER CA
2023-10-10 369-212-8XXX T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2023-10-10 369-212-9XXX T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2023-10-10 408-303-2XXX T-MOBILE USA, INC. 6529 SARATOGA CA
2023-10-10 408-303-3XXX T-MOBILE USA, INC. 6529 SARATOGA CA
2023-10-10 408-303-4XXX T-MOBILE USA, INC. 6529 SARATOGA CA
2023-10-10 408-303-5XXX T-MOBILE USA, INC. 6529 SARATOGA CA
2023-10-10 424-724-0XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-10-10 424-724-1XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-10-10 424-867-4XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2023-10-10 458-278-0XXX T-MOBILE USA, INC. 6529 ALBANY OR
2023-10-10 458-309-0XXX T-MOBILE USA, INC. 6529 ALBANY OR
2023-10-10 458-309-1XXX T-MOBILE USA, INC. 6529 ALBANY OR
2023-10-10 628-294-6XXX T-MOBILE USA, INC. 6529 NOVATO CA
2023-10-10 628-294-7XXX T-MOBILE USA, INC. 6529 NOVATO CA
2023-10-10 650-220-9XXX T-MOBILE USA, INC. 6529 MT VIEW CA
2023-10-10 650-661-7XXX T-MOBILE USA, INC. 6529 PACIFICA CA
2023-10-10 650-661-8XXX T-MOBILE USA, INC. 6529 PACIFICA CA
2023-10-10 657-605-9XXX T-MOBILE USA, INC. 6529 ORANGE CA
2023-10-10 657-671-5XXX T-MOBILE USA, INC. 6529 BREA CA
2023-10-10 657-671-6XXX T-MOBILE USA, INC. 6529 BREA CA
2023-10-10 657-705-8XXX T-MOBILE USA, INC. 6529 CYPRESS CA
2023-10-10 657-705-9XXX T-MOBILE USA, INC. 6529 CYPRESS CA
2023-10-10 840-233-2XXX T-MOBILE USA, INC. 6529 ARROWHEAD 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.