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 937
LEVEL 3 TELECOM OF OHIO, LLC - OH 91
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
2018-08-23 937-980-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 TROY OH
2016-02-12 937-615-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 PIQUA OH
2015-09-21 937-860-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 YLSPGCLFTN OH
2015-06-24 937-970-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 CEDARVILLE OH
2015-04-21 937-863-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 ENON OH
2014-02-27 937-762-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2014-02-27 937-762-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-08-15 937-709-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 BELLBROOK OH
2012-07-26 937-713-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2012-07-26 937-713-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2011-06-09 937-705-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 BEAVERCREK OH
2011-05-20 937-705-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 BEAVERCREK OH
2011-05-20 937-705-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 BEAVERCREK OH
2011-05-20 937-705-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 BEAVERCREK OH
2010-05-04 937-392-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 RIPLEY OH
2010-05-04 937-618-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GEORGETOWN OH
2010-05-04 937-868-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GREENFIELD OH
2010-02-19 937-314-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DONNELSVL OH
2010-02-19 937-584-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 SABINA OH
2009-08-31 937-529-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 TROTWOOD OH
2009-07-02 937-444-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 MOUNT ORAB OH
2008-10-29 937-752-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 SEAMAN OH
2008-07-18 937-487-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-07-18 937-487-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2008-04-04 937-781-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH
2007-10-18 937-938-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DAYTON OH

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.