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
2004-08-30 210-237-5XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-08-30 210-237-6XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-08-30 210-237-7XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2004-08-30 573-452-1XXX T-MOBILE USA, INC. 6529 FTLENARDWD MO
2004-08-27 951-760-3XXX T-MOBILE USA, INC. 6529 TEMECULA CA
2004-08-26 253-205-4XXX T-MOBILE USA, INC. 6529 AUBURN WA
2004-08-26 304-952-6XXX T-MOBILE USA, INC. 6529 BLUEFIELD WV
2004-08-26 480-275-0XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-08-26 480-275-1XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-08-26 480-275-9XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-08-26 708-668-5XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2004-08-26 720-207-4XXX T-MOBILE USA, INC. 6529 DENVER CO
2004-08-26 928-388-1XXX T-MOBILE USA, INC. 6529 YUMA AZ
2004-08-26 928-388-2XXX T-MOBILE USA, INC. 6529 YUMA AZ
2004-08-26 928-388-3XXX T-MOBILE USA, INC. 6529 YUMA AZ
2004-08-25 330-261-2XXX T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2004-08-25 541-441-3XXX T-MOBILE USA, INC. 6529 GRANTSPASS OR
2004-08-24 405-370-3XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2004-08-24 405-370-4XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2004-08-24 405-370-5XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2004-08-24 405-602-9XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2004-08-24 405-604-7XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2004-08-24 408-952-9XXX T-MOBILE USA, INC. 6529 SNJS NORTH CA
2004-08-24 432-599-0XXX T-MOBILE USA, INC. 6529 MIDLAND TX
2004-08-24 432-599-1XXX T-MOBILE USA, INC. 6529 MIDLAND TX
2004-08-24 479-567-7XXX T-MOBILE USA, INC. 6529 RUSSELLVL AR
2004-08-23 425-208-5XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2004-08-23 503-413-0XXX T-MOBILE USA, INC. 6529 PORTLAND OR
2004-08-23 559-202-8XXX T-MOBILE USA, INC. 6529 PORTERVL CA
2004-08-23 775-247-1XXX T-MOBILE USA, INC. 6529 RENO NV
2004-08-23 916-218-2XXX T-MOBILE USA, INC. 6529 RSVL MAIN CA
2004-08-22 312-376-5XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-08-22 312-376-6XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-08-22 312-376-7XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-08-21 224-639-5XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-08-21 224-639-6XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-08-21 224-639-7XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-08-21 224-639-8XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-08-21 224-639-9XXX T-MOBILE USA, INC. 6529 NORTHBROOK IL
2004-08-21 510-717-7XXX T-MOBILE USA, INC. 6529 OKLD BKLY CA
2004-08-21 818-284-3XXX T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2004-08-20 630-201-6XXX T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-08-20 630-201-7XXX T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-08-19 310-406-9XXX T-MOBILE USA, INC. 6529 REDONDO CA
2004-08-19 408-429-3XXX T-MOBILE USA, INC. 6529 CAMPBELL CA
2004-08-19 562-489-3XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2004-08-19 562-489-4XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2004-08-19 562-489-5XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2004-08-19 626-251-3XXX T-MOBILE USA, INC. 6529 COVINA CA
2004-08-19 626-251-7XXX T-MOBILE USA, INC. 6529 COVINA 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.