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 262
LEVEL 3 COMMUNICATIONS, LLC - WI 149
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
2024-05-30 262-450-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2023-11-07 262-316-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2023-09-12 262-265-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2023-08-22 262-316-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2023-06-20 262-666-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2023-03-01 262-350-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2023-02-09 262-431-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 DOUSMAN WI
2023-02-09 262-739-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WIND LAKE WI
2022-07-27 262-799-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2022-07-21 262-280-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WATERFORD WI
2022-05-10 262-283-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2022-04-06 262-420-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2022-01-11 262-420-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2021-08-09 262-265-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2021-05-13 262-968-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 GENESEE WI
2020-08-17 262-266-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 OCONOMOWOC WI
2020-07-29 262-259-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2020-07-22 262-799-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2020-04-01 262-379-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ELKHORN WI
2017-09-25 262-303-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 DELAFIELD WI
2017-09-25 262-368-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MUKWONAGO WI
2017-02-22 262-200-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 OCONOMOWOC WI
2016-03-29 262-361-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HARTLAND WI
2014-12-02 262-392-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 NO PRAIRIE WI
2014-11-26 262-279-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 GENOA CITY WI
2014-09-30 262-597-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 KENOSHA WI
2013-09-18 262-649-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2012-12-27 262-299-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ALLENTON WI
2012-12-21 262-226-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2012-05-30 262-465-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MUSKEGO WI
2012-02-01 262-582-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SULLIVAN WI
2012-01-12 262-912-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HARTLAND WI
2011-12-16 262-290-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2011-12-16 262-314-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SUSSEX WI
2011-11-10 262-671-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 KENOSHA WI
2011-07-07 262-631-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 RACINE WI
2011-01-11 262-395-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
2010-09-03 262-290-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2008-07-17 262-347-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2008-05-08 262-257-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MENOMONFLS WI
2008-05-08 262-686-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WILLIAMSBY WI
2008-05-08 262-696-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 PEWAUKEE WI
2008-05-08 262-709-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HARTFORD WI
2008-05-08 262-724-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 DARIEN WI
2008-05-08 262-725-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 DELAVAN WI
2008-05-05 262-518-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 THIENSVL WI
2008-05-05 262-595-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 PARKSIDE WI
2008-05-01 262-607-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WILLIAMSBY WI
2008-05-01 262-686-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WILLIAMSBY WI
2008-04-16 262-885-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SILVERLAKE 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.