NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 214
LEVEL 3 COMMUNICATIONS, LLC - TX 162
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
2024-08-06 214-615-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2020-02-27 214-447-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2020-02-27 214-447-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2018-07-05 214-414-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2018-07-05 214-416-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2014-09-16 214-304-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ROCKWALL TX
2014-07-23 214-308-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRISCO TX
2014-04-25 214-971-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ENNIS TX
2014-04-23 214-305-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PROSPER TX
2014-04-18 214-307-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCKINNEY TX
2012-06-28 214-299-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2012-05-03 214-935-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ANNA TX
2011-11-29 214-997-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DLFTWTARPT TX
2011-07-27 214-499-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRVING TX
2011-06-29 214-935-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ANNA TX
2011-06-23 214-856-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCKINNEY TX
2011-04-04 214-516-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRANDPRARI TX
2010-10-07 214-310-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCKINNEY TX
2010-05-24 214-919-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2010-03-23 214-919-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2010-01-19 214-919-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2009-12-30 214-842-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCKINNEY TX
2009-11-23 214-206-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2009-11-23 214-613-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2009-11-23 214-613-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2009-11-23 214-613-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2009-11-23 214-716-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-09-25 214-702-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DLFTWTARPT TX
2008-08-14 214-377-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-08-14 214-377-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-07-08 214-299-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2008-06-02 214-295-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-05-21 214-501-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLANO TX
2008-05-07 214-960-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRANDPRARI TX
2008-05-05 214-506-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2008-05-01 214-506-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2008-04-28 214-960-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRANDPRARI TX
2008-04-28 214-960-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRANDPRARI TX
2008-04-24 214-666-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-04-24 214-960-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GRANDPRARI TX
2008-04-22 214-666-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-03-31 214-666-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-03-31 214-666-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-03-03 214-272-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2008-01-30 214-509-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALLEN TX
2008-01-22 214-506-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2008-01-17 214-506-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2007-11-20 214-431-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2006-11-30 214-254-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
2006-11-30 214-296-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.