NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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 608
UNITED STATES CELLULAR - WI 203
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
2025-04-04 608-466-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2025-04-04 608-973-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 BRODHEAD WI
2025-01-23 608-492-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2024-09-20 608-739-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 MUSCODA WI
2024-09-19 608-805-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2024-09-13 608-540-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 HOLMEN WI
2024-08-06 608-917-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 WISCONDLLS WI
2024-06-26 608-671-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2024-06-26 608-696-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 SPARTA WI
2022-10-05 608-505-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 POYNETTE WI
2022-09-09 608-730-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2022-06-07 608-673-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2022-06-07 608-673-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2022-04-19 608-885-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WI 6274 LANCASTER WI
2022-02-08 608-671-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2021-10-05 608-460-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 SAUK CITY WI
2021-09-07 608-673-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2021-09-07 608-673-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2021-08-10 608-703-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 NEW GLARUS WI
2021-06-18 608-671-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2020-10-23 608-480-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2020-10-05 608-482-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 DARLINGTON WI
2020-09-29 608-766-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 ELROY WI
2020-09-25 608-367-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2020-03-23 608-573-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 POYNETTE WI
2019-12-30 608-495-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WI 6274 REEDSBURG WI
2019-12-26 608-631-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2019-09-11 608-447-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 BRODHEAD WI
2019-09-09 608-631-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2019-06-05 608-927-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WI 6274 BELOIT WI
2018-10-05 608-459-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WI 6274 SPG GREEN WI
2018-09-17 608-636-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 NEW GLARUS WI
2018-05-08 608-979-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 VIROQUA WI
2017-09-29 608-480-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2017-04-06 608-693-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 WESTBY WI
2017-03-13 608-396-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 MELROSE WI
2016-12-08 608-341-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 DODGEVILLE WI
2016-10-14 608-573-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 POYNETTE WI
2016-09-06 608-822-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 FENNIMORE WI
2016-08-09 608-412-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 PRARIDCHIN WI
2016-08-03 608-404-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 WISCONDLLS WI
2016-08-02 608-644-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 SAUK CITY WI
2016-08-01 608-640-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2016-07-26 608-720-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2016-07-18 608-800-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2016-06-10 608-480-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WI 6274 STOUGHTON WI
2016-06-03 608-369-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WI 6274 WESTFIELD WI
2016-05-11 608-636-6XXX 6000–6999Assigned UNITED STATES CELLULAR - WI 6274 NEW GLARUS WI
2016-03-25 608-800-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI
2016-03-04 608-800-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WI 6274 MADISON WI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.