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
2004-12-28 530-646-9XXX T-MOBILE USA, INC. 6529 REDDING CA
2004-12-28 574-265-8XXX T-MOBILE USA, INC. 6529 WARSAW IN
2004-12-28 775-354-6XXX T-MOBILE USA, INC. 6529 RENO NV
2004-12-28 920-268-9XXX T-MOBILE USA, INC. 6529 APPLETON WI
2004-12-28 920-471-2XXX T-MOBILE USA, INC. 6529 GREEN BAY WI
2004-12-27 432-978-3XXX T-MOBILE USA, INC. 6529 TERMINAL TX
2004-12-27 432-978-4XXX T-MOBILE USA, INC. 6529 TERMINAL TX
2004-12-27 708-762-6XXX T-MOBILE USA, INC. 6529 RIVERSIDE IL
2004-12-27 773-322-2XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2004-12-27 814-746-7XXX T-MOBILE USA, INC. 6529 ERIE PA
2004-12-27 903-275-4XXX T-MOBILE USA, INC. 6529 ATHENS TX
2004-12-27 915-799-4XXX T-MOBILE USA, INC. 6529 EL PASO TX
2004-12-27 915-799-5XXX T-MOBILE USA, INC. 6529 EL PASO TX
2004-12-27 915-799-7XXX T-MOBILE USA, INC. 6529 EL PASO TX
2004-12-27 915-799-8XXX T-MOBILE USA, INC. 6529 EL PASO TX
2004-12-22 210-838-0XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-1XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-2XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-3XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-4XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-5XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-6XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-7XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 210-838-8XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-12-22 620-262-6XXX T-MOBILE USA, INC. 6529 WINFIELD KS
2004-12-22 626-262-1XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-12-22 626-320-4XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-12-22 661-932-1XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2004-12-22 714-280-5XXX T-MOBILE USA, INC. 6529 ORANGE CA
2004-12-22 714-280-6XXX T-MOBILE USA, INC. 6529 ORANGE CA
2004-12-22 818-280-7XXX T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2004-12-22 909-438-6XXX T-MOBILE USA, INC. 6529 CHINO CA
2004-12-22 909-539-3XXX T-MOBILE USA, INC. 6529 CHINO CA
2004-12-21 360-204-9XXX T-MOBILE USA, INC. 6529 SILVERDALE WA
2004-12-21 503-984-7XXX T-MOBILE USA, INC. 6529 WOODBURN OR
2004-12-21 951-623-9XXX T-MOBILE USA, INC. 6529 PERRIS CA
2004-12-20 219-577-2XXX T-MOBILE USA, INC. 6529 CROWNPOINT IN
2004-12-20 224-265-3XXX T-MOBILE USA, INC. 6529 ELK GROVE IL
2004-12-20 262-672-5XXX T-MOBILE USA, INC. 6529 RACINE WI
2004-12-20 310-966-0XXX T-MOBILE USA, INC. 6529 W ANGELES CA
2004-12-20 323-334-7XXX T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2004-12-20 323-403-6XXX T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2004-12-20 408-329-2XXX T-MOBILE USA, INC. 6529 SUNNYVALE CA
2004-12-20 661-916-7XXX T-MOBILE USA, INC. 6529 LANCASTER CA
2004-12-20 708-526-4XXX T-MOBILE USA, INC. 6529 RIVERSIDE IL
2004-12-20 760-696-8XXX T-MOBILE USA, INC. 6529 OCSD OCSD CA
2004-12-20 773-827-6XXX T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2004-12-20 773-827-7XXX T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2004-12-20 805-284-7XXX T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-12-20 815-671-9XXX T-MOBILE USA, INC. 6529 JOLIET 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.