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
2023-07-28 213-656-7XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2023-07-28 213-656-8XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2023-07-28 213-656-9XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2023-07-28 224-468-5XXX T-MOBILE USA, INC. 6529 ELGIN IL
2023-07-28 224-468-6XXX T-MOBILE USA, INC. 6529 ELGIN IL
2023-07-28 224-468-7XXX T-MOBILE USA, INC. 6529 ELGIN IL
2023-07-28 224-468-8XXX T-MOBILE USA, INC. 6529 ELGIN IL
2023-07-28 224-468-9XXX T-MOBILE USA, INC. 6529 ELGIN IL
2023-07-28 307-203-8XXX T-MOBILE USA, INC. 6529 JACKSON WY
2023-07-28 385-513-1XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-0XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-1XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-2XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-6XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-7XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-8XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 385-542-9XXX T-MOBILE USA, INC. 6529 MURRAY UT
2023-07-28 442-399-2XXX T-MOBILE USA, INC. 6529 EL MIRAGE CA
2023-07-28 442-399-3XXX T-MOBILE USA, INC. 6529 EL MIRAGE CA
2023-07-28 618-573-9XXX T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-07-28 636-378-7XXX T-MOBILE USA, INC. 6529 ST PETERS MO
2023-07-28 636-378-8XXX T-MOBILE USA, INC. 6529 ST PETERS MO
2023-07-28 636-378-9XXX T-MOBILE USA, INC. 6529 ST PETERS MO
2023-07-28 657-664-8XXX T-MOBILE USA, INC. 6529 SILVERADO CA
2023-07-28 714-825-7XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2023-07-28 818-961-1XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-07-28 818-961-3XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-07-28 818-961-9XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2023-07-28 909-220-2XXX T-MOBILE USA, INC. 6529 REDLANDS CA
2023-07-28 909-220-3XXX T-MOBILE USA, INC. 6529 REDLANDS CA
2023-07-28 949-704-7XXX T-MOBILE USA, INC. 6529 TRABUCO CA
2023-07-28 949-738-0XXX T-MOBILE USA, INC. 6529 IRVINE CA
2023-07-28 949-738-1XXX T-MOBILE USA, INC. 6529 IRVINE CA
2023-07-28 949-738-2XXX T-MOBILE USA, INC. 6529 IRVINE CA
2023-07-28 949-738-3XXX T-MOBILE USA, INC. 6529 IRVINE CA
2023-07-28 949-738-4XXX T-MOBILE USA, INC. 6529 IRVINE CA
2023-07-28 949-738-7XXX T-MOBILE USA, INC. 6529 IRVINE CA
2023-07-28 949-997-7XXX T-MOBILE USA, INC. 6529 TRABUCO CA
2023-07-28 970-570-2XXX T-MOBILE USA, INC. 6529 CORTEZ CO
2023-07-28 970-816-7XXX T-MOBILE USA, INC. 6529 CORTEZ CO
2023-07-28 971-397-1XXX T-MOBILE USA, INC. 6529 NORTH PL OR
2023-07-28 971-397-2XXX T-MOBILE USA, INC. 6529 NORTH PL OR
2023-07-28 971-403-6XXX T-MOBILE USA, INC. 6529 ASTORIA OR
2023-07-28 971-403-7XXX T-MOBILE USA, INC. 6529 ASTORIA OR
2023-07-28 986-942-2XXX T-MOBILE USA, INC. 6529 PAYETTE ID
2023-07-28 986-942-3XXX T-MOBILE USA, INC. 6529 PAYETTE ID
2023-07-27 224-482-2XXX T-MOBILE USA, INC. 6529 DEERFIELD IL
2023-07-27 224-482-3XXX T-MOBILE USA, INC. 6529 DEERFIELD IL
2023-07-27 580-850-6XXX T-MOBILE USA, INC. 6529 ARDMORE OK
2023-07-27 580-850-7XXX T-MOBILE USA, INC. 6529 ARDMORE OK

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.