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 614
LEVEL 3 COMMUNICATIONS, LLC - OH 153
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
2020-07-23 614-704-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WORTHINGTN OH
2020-05-05 614-874-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2018-03-27 614-974-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2017-09-12 614-502-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2017-04-06 614-739-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 REYNOLDSBG OH
2017-02-01 614-696-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2016-02-23 614-971-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLIARD OH
2015-12-01 614-698-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2015-11-24 614-852-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2015-07-29 614-369-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2015-07-29 614-369-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2015-07-27 614-797-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WESTERVL OH
2015-07-15 614-641-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2015-03-11 614-591-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2015-03-11 614-867-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2014-10-24 614-591-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2014-10-01 614-705-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2014-10-01 614-845-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 REYNOLDSBG OH
2014-09-11 614-971-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLIARD OH
2014-06-25 614-816-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2014-02-06 614-467-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2013-11-26 614-779-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-11-26 614-980-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-09-06 614-902-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-09-06 614-902-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-07-25 614-907-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-07-02 614-450-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WORTHINGTN OH
2013-07-02 614-629-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-06-21 614-769-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-04-17 614-721-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-01-09 614-914-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2013-01-09 614-914-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2012-10-11 614-763-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2012-04-11 614-344-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HARRISBURG OH
2012-02-10 614-470-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GAHANNA OH
2012-02-08 614-702-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2012-02-02 614-682-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WESTERVL OH
2012-01-19 614-468-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WORTHINGTN OH
2011-12-16 614-541-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLIARD OH
2011-12-01 614-328-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 REYNOLDSBG OH
2011-12-01 614-474-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GAHANNA OH
2011-12-01 614-763-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2011-11-11 614-610-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GROVEPORT OH
2011-07-07 614-310-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WORTHINGTN OH
2011-07-07 614-682-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WESTERVL OH
2011-06-15 614-932-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DUBLIN OH
2011-04-15 614-230-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH
2011-03-16 614-767-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLIARD OH
2011-02-10 614-472-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GAHANNA OH
2011-02-03 614-500-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 COLUMBUS OH

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.