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
2022-01-27 213-643-8XXX T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2022-01-27 213-643-9XXX T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2022-01-27 385-456-0XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-1XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-2XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-3XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-4XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-5XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-6XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-7XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-8XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-456-9XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2022-01-27 385-457-0XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-1XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-2XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-3XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-4XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-5XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-6XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-7XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-8XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 385-457-9XXX T-MOBILE USA, INC. 6529 SALT LAKE UT
2022-01-27 406-607-2XXX T-MOBILE USA, INC. 6529 KALISPELL MT
2022-01-27 406-607-3XXX T-MOBILE USA, INC. 6529 KALISPELL MT
2022-01-27 406-760-8XXX T-MOBILE USA, INC. 6529 GREATFALLS MT
2022-01-27 406-898-7XXX T-MOBILE USA, INC. 6529 BOZEMAN MT
2022-01-27 406-922-7XXX T-MOBILE USA, INC. 6529 BOZEMAN MT
2022-01-27 425-340-0XXX T-MOBILE USA, INC. 6529 ISSAQUAH WA
2022-01-27 425-340-1XXX T-MOBILE USA, INC. 6529 ISSAQUAH WA
2022-01-27 425-340-2XXX T-MOBILE USA, INC. 6529 ISSAQUAH WA
2022-01-27 425-542-9XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2022-01-27 458-272-7XXX T-MOBILE USA, INC. 6529 CORVALLIS OR
2022-01-27 458-272-8XXX T-MOBILE USA, INC. 6529 CORVALLIS OR
2022-01-27 564-229-4XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 564-229-5XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 564-229-6XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 564-229-7XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 564-229-8XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 564-229-9XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2022-01-27 719-920-5XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2022-01-27 719-920-6XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2022-01-27 719-920-7XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2022-01-27 719-920-8XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2022-01-27 719-920-9XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2022-01-27 720-957-1XXX T-MOBILE USA, INC. 6529 DENVER CO
2022-01-27 720-957-2XXX T-MOBILE USA, INC. 6529 DENVER CO
2022-01-27 720-957-3XXX T-MOBILE USA, INC. 6529 DENVER CO
2022-01-27 720-957-4XXX T-MOBILE USA, INC. 6529 DENVER CO
2022-01-27 720-957-5XXX T-MOBILE USA, INC. 6529 DENVER CO
2022-01-27 720-957-6XXX T-MOBILE USA, INC. 6529 DENVER CO

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.