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 225
LEVEL 3 COMMUNICATIONS, LLC - LA 100
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
2024-06-18 225-519-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 ALBANY LA
2024-06-07 225-259-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LIVONIA LA
2021-10-04 225-459-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 GONZALES LA
2021-09-29 225-403-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 DUTCH TOWN LA
2017-01-31 225-666-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2017-01-17 225-777-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MONTPELIER LA
2016-12-13 225-666-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-12-23 225-376-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-07-23 225-960-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-07-23 225-960-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-06-17 225-960-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-03-19 225-424-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-03-19 225-424-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2015-01-20 225-784-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 STFRNCISVL LA
2014-10-30 225-412-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2014-09-12 225-380-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 DENHAM SPG LA
2014-07-10 225-442-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2014-06-11 225-442-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2014-05-15 225-460-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 GREENSBURG LA
2014-05-01 225-434-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 VACHERIE LA
2014-04-25 225-310-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 JACKSON LA
2014-04-25 225-331-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 CONVENT LA
2014-04-25 225-417-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LUTCHER LA
2014-04-22 225-424-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2014-04-22 225-424-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2014-03-28 225-532-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 ALBANY LA
2014-03-28 225-716-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 WH CASTLE LA
2014-03-07 225-217-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NO CORNOR LA
2014-01-10 225-412-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2013-12-26 225-412-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2013-12-26 225-412-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2013-11-14 225-692-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 PLAQUEMINE LA
2013-10-02 225-650-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2013-09-03 225-263-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 ST GABRIEL LA
2013-06-19 225-228-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2013-06-19 225-283-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LIVINGSTON LA
2013-05-31 225-384-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2012-12-14 225-239-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2012-11-15 225-239-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2012-11-09 225-522-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 CLINTON LA
2012-06-27 225-361-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2012-06-12 225-713-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEW ROADS LA
2011-09-28 225-435-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LIVINGSTON LA
2011-07-20 225-385-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 PLAQUEMINE LA
2011-03-11 225-367-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2011-03-11 225-367-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2010-11-16 225-372-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2010-11-16 225-372-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2010-11-16 225-372-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2010-08-11 225-330-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA

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.