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 786
LEVEL 3 COMMUNICATIONS, LLC - FL 214
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
2020-01-08 786-741-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2020-01-08 786-741-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2019-10-07 786-723-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2019-07-18 786-677-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 KEYS FL
2016-06-23 786-482-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2016-06-23 786-482-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2016-05-27 786-482-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2016-03-02 786-847-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 KEYS FL
2015-10-27 786-814-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-10-27 786-814-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-10-27 786-814-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-08-05 786-805-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-08-05 786-805-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-07-23 786-590-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2015-07-17 786-725-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-07-17 786-725-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-07-17 786-725-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-07-17 786-725-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2015-05-28 786-747-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-09-25 786-646-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-09-25 786-646-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-09-25 786-646-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-09-25 786-646-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-09-19 786-646-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-09-19 786-646-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-08-19 786-577-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-08-19 786-577-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-07-09 786-577-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-07-09 786-577-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-07-09 786-577-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-06-26 786-707-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2014-06-26 786-707-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2014-06-18 786-257-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-06-18 786-257-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-06-11 786-574-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-06-11 786-574-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-04-30 786-574-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-04-30 786-574-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-04-21 786-574-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-04-21 786-574-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2014-04-21 786-707-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2014-02-20 786-801-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2013-10-03 786-420-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2013-08-21 786-520-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2013-06-25 786-801-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2012-11-21 786-516-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2012-10-16 786-501-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MIAMI FL
2012-06-21 786-766-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NORTH DADE FL
2012-06-12 786-410-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 HOMESTEAD FL
2012-02-10 786-732-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 PERRINE FL

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.