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
2021-12-22 224-382-5XXX T-MOBILE USA, INC. 6529 GLENVIEW IL
2021-12-21 872-822-0XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-1XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-2XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-3XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-4XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-5XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-822-8XXX T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-12-21 872-844-0XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-1XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-2XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-3XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-4XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-5XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-6XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-7XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-21 872-844-8XXX T-MOBILE USA, INC. 6529 CHICGOZN09 IL
2021-12-20 262-381-9XXX T-MOBILE USA, INC. 6529 WEST BEND WI
2021-12-20 682-368-0XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-12-20 682-368-9XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-12-20 830-359-9XXX T-MOBILE USA, INC. 6529 NEWBRANFLS TX
2021-12-17 682-294-7XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-12-17 682-294-9XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2021-12-17 806-726-0XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2021-12-17 806-726-5XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2021-12-17 806-726-6XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2021-12-17 806-726-7XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2021-12-17 806-726-8XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2021-12-17 806-726-9XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2021-12-17 830-318-5XXX T-MOBILE USA, INC. 6529 NEWBRANFLS TX
2021-12-17 830-360-5XXX T-MOBILE USA, INC. 6529 NEWBRANFLS TX
2021-12-17 830-946-9XXX T-MOBILE USA, INC. 6529 NEWBRANFLS TX
2021-12-14 425-545-9XXX T-MOBILE USA, INC. 6529 RENTON WA
2021-12-14 539-260-7XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-12-14 539-260-8XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-12-14 539-260-9XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-12-14 559-768-9XXX T-MOBILE USA, INC. 6529 REEDLEY CA
2021-12-14 562-580-8XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2021-12-14 562-580-9XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2021-12-14 618-440-6XXX T-MOBILE USA, INC. 6529 MARION IL
2021-12-14 618-440-7XXX T-MOBILE USA, INC. 6529 MARION IL
2021-12-14 618-440-8XXX T-MOBILE USA, INC. 6529 MARION IL
2021-12-14 618-440-9XXX T-MOBILE USA, INC. 6529 MARION IL
2021-12-14 650-609-8XXX T-MOBILE USA, INC. 6529 MILLBRAE CA
2021-12-14 650-609-9XXX T-MOBILE USA, INC. 6529 MILLBRAE CA
2021-12-14 682-364-0XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2021-12-14 682-364-1XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2021-12-14 682-364-2XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2021-12-14 682-364-3XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2021-12-14 682-364-4XXX T-MOBILE USA, INC. 6529 GRANBURY TX

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.