NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

76 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. 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
2005-09-28 541-663-6XXX T-MOBILE USA, INC. 6529 LA GRANDE OR
2005-09-28 623-209-4XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-28 623-399-5XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-28 623-399-7XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-28 702-883-8XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-09-28 805-416-3XXX T-MOBILE USA, INC. 6529 SIMIVALLEY CA
2005-09-27 303-269-1XXX T-MOBILE USA, INC. 6529 DENVER CO
2005-09-27 858-345-7XXX T-MOBILE USA, INC. 6529 DEL MAR CA
2005-09-27 859-496-3XXX T-MOBILE USA, INC. 6529 COVINGTON KY
2005-09-27 949-365-6XXX T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2005-09-26 509-205-9XXX T-MOBILE USA, INC. 6529 KENNEWICK WA
2005-09-23 210-304-0XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-23 210-304-9XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-23 210-369-1XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-23 214-241-2XXX T-MOBILE USA, INC. 6529 ENNIS TX
2005-09-23 323-342-3XXX T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2005-09-23 510-493-0XXX T-MOBILE USA, INC. 6529 FRNK MAIN CA
2005-09-23 512-406-4XXX T-MOBILE USA, INC. 6529 AUSTIN TX
2005-09-23 512-406-9XXX T-MOBILE USA, INC. 6529 AUSTIN TX
2005-09-23 512-450-2XXX T-MOBILE USA, INC. 6529 AUSTIN TX
2005-09-23 512-450-3XXX T-MOBILE USA, INC. 6529 AUSTIN TX
2005-09-23 562-472-9XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2005-09-23 760-576-7XXX T-MOBILE USA, INC. 6529 OCSD OCSD CA
2005-09-23 818-334-9XXX T-MOBILE USA, INC. 6529 GLENDALE CA
2005-09-23 949-259-3XXX T-MOBILE USA, INC. 6529 RNCHOVIEJO CA
2005-09-23 949-419-7XXX T-MOBILE USA, INC. 6529 IRVINE CA
2005-09-22 541-550-8XXX T-MOBILE USA, INC. 6529 BEND OR
2005-09-22 541-550-9XXX T-MOBILE USA, INC. 6529 BEND OR
2005-09-22 608-443-6XXX T-MOBILE USA, INC. 6529 MADISON WI
2005-09-22 623-433-6XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-22 626-384-6XXX T-MOBILE USA, INC. 6529 COVINA CA
2005-09-22 626-384-7XXX T-MOBILE USA, INC. 6529 COVINA CA
2005-09-22 626-384-8XXX T-MOBILE USA, INC. 6529 COVINA CA
2005-09-22 626-384-9XXX T-MOBILE USA, INC. 6529 COVINA CA
2005-09-22 630-345-0XXX T-MOBILE USA, INC. 6529 GENEVA IL
2005-09-22 951-345-0XXX T-MOBILE USA, INC. 6529 PERRIS CA
2005-09-22 951-801-0XXX T-MOBILE USA, INC. 6529 RIVERSIDE CA
2005-09-22 951-801-1XXX T-MOBILE USA, INC. 6529 RIVERSIDE CA
2005-09-22 970-361-6XXX T-MOBILE USA, INC. 6529 GRAND JCT CO
2005-09-21 210-454-8XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-21 210-577-1XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-21 210-577-2XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-21 210-577-8XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-21 304-952-2XXX T-MOBILE USA, INC. 6529 BLUEFIELD WV
2005-09-21 708-441-9XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2005-09-21 708-745-4XXX T-MOBILE USA, INC. 6529 ORLAND IL
2005-09-21 708-745-8XXX T-MOBILE USA, INC. 6529 ORLAND IL
2005-09-21 773-516-3XXX T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2005-09-21 972-302-7XXX T-MOBILE USA, INC. 6529 MCKINNEY TX
2005-09-20 360-292-0XXX T-MOBILE USA, INC. 6529 OLYMPIA WA

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.