NumberResearch Membership · Data 09/22/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/22/2026

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, all time — NPA 209
T-MOBILE USA, INC. 472
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
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2024-08-28 209-517-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2024-08-28 209-517-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2024-06-12 209-979-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LOS BANOS CA
2024-01-19 209-972-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2024-01-11 209-236-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2024-01-11 209-971-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2023-10-10 209-767-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2023-09-21 209-517-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2023-09-21 209-517-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2023-09-21 209-517-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2023-09-21 209-776-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JACKSON CA
2023-07-28 209-776-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 JACKSON CA
2023-07-18 209-517-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2023-07-18 209-630-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2022-12-07 209-801-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2022-11-22 209-767-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-11-22 209-767-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-10-19 209-767-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-10-19 209-767-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-10-19 209-767-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-08-11 209-889-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2022-06-08 209-960-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2022-06-08 209-960-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2022-04-20 209-427-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2022-04-20 209-767-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-04-20 209-767-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-04-20 209-906-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2022-04-20 209-906-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2022-03-10 209-767-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-03-04 209-219-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-03-04 209-864-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-03-04 209-864-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2022-03-04 209-875-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2022-03-04 209-875-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2022-02-25 209-542-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HUGHSON CA
2022-02-10 209-919-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OAKDALE CA
2022-01-27 209-801-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2022-01-27 209-801-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2021-12-08 209-864-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2021-12-08 209-864-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2021-12-08 209-864-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2021-10-01 209-913-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2021-10-01 209-913-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TURLOCK CA
2021-07-30 209-801-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JAMESTOWN CA
2021-07-16 209-849-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2021-07-16 209-875-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2021-07-16 209-875-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2021-07-16 209-875-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2021-07-15 209-771-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2021-07-15 209-771-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MODESTO CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.