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 714
LEVEL 3 COMMUNICATIONS, LLC - CA 187
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
2017-06-22 714-790-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA
2015-03-05 714-831-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BREA CA
2014-06-04 714-515-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FULLERTON CA
2014-04-22 714-266-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BUENA PARK CA
2014-03-13 714-581-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ANA CA
2014-03-13 714-804-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BREA CA
2014-02-28 714-902-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WESTMINSTR CA
2013-11-26 714-947-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CYPRESS CA
2013-10-17 714-702-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WESTMINSTR CA
2013-10-04 714-215-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2013-10-04 714-462-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GARDEN GRV CA
2013-09-11 714-581-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ANA CA
2013-08-05 714-278-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FULLERTON CA
2013-05-28 714-332-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BREA CA
2013-05-28 714-462-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GARDEN GRV CA
2013-04-08 714-563-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2013-03-28 714-701-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 YORBALINDA CA
2013-02-25 714-294-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2012-12-14 714-462-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GARDEN GRV CA
2012-11-29 714-988-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BREA CA
2012-10-18 714-509-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA
2012-05-16 714-941-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA
2012-03-22 714-659-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ANA CA
2012-02-01 714-485-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 YORBALINDA CA
2012-02-01 714-576-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BUENA PARK CA
2012-01-04 714-793-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WESTMINSTR CA
2011-12-22 714-494-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BREA CA
2011-12-15 714-707-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SILVERADO CA
2011-10-27 714-591-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GARDEN GRV CA
2011-09-16 714-576-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BUENA PARK CA
2011-07-12 714-770-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FULLERTON CA
2011-05-16 714-643-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GARDEN GRV CA
2011-05-04 714-482-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BREA CA
2011-05-04 714-701-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 YORBALINDA CA
2010-11-09 714-905-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2010-10-27 714-451-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FULLERTON CA
2010-09-07 714-418-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ANA CA
2010-09-03 714-798-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PLACENTIA CA
2010-07-01 714-769-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA
2010-04-07 714-783-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2009-12-29 714-422-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2009-09-24 714-699-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CYPRESS CA
2009-08-26 714-202-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA
2009-07-29 714-598-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2009-06-23 714-202-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA
2009-04-27 714-617-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ANA CA
2009-04-15 714-409-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANAHEIM CA
2008-11-05 714-823-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GARDEN GRV CA
2008-10-13 714-699-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CYPRESS CA
2008-08-25 714-464-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ORANGE CA

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.