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 407
LEVEL 3 TELECOM OF FLORIDA, LP - FL 28
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
2015-08-28 407-915-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 SANFORD FL
2015-06-30 407-845-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2015-02-02 407-613-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2015-02-02 407-613-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2014-05-19 407-734-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2013-08-15 407-985-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2012-06-28 407-308-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2009-05-14 407-212-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 WINTERPARK FL
2009-05-14 407-212-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 WINTERPARK FL
2009-05-05 407-309-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2009-05-05 407-309-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2008-10-03 407-556-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ST CLOUD FL
2008-04-28 407-261-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 WINTERPARK FL
2007-12-20 407-591-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2007-12-20 407-591-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2007-12-20 407-591-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2006-01-27 407-745-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2006-01-27 407-745-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-12-21 407-404-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-12-21 407-404-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-12-21 407-404-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-10-06 407-455-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-10-06 407-455-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-10-06 407-455-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-08-01 407-708-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 SANFORD FL
2005-04-25 407-284-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2005-04-25 407-284-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL
2004-06-30 407-235-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 ORLANDO FL

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.