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 614
LEVEL 3 TELECOM OF OHIO, LLC - OH 64
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
2015-10-28 614-983-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GROVEPORT OH
2015-01-28 614-971-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 HILLIARD OH
2014-12-15 614-681-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WORTHINGTN OH
2014-10-29 614-956-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2014-10-17 614-641-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2014-05-14 614-817-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2014-03-13 614-831-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2014-02-13 614-713-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2014-02-07 614-918-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WESTERVL OH
2013-11-08 614-662-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 LOCKBOURNE OH
2013-06-25 614-763-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2013-06-20 614-918-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WESTERVL OH
2012-07-11 614-603-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2012-02-01 614-701-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2012-02-01 614-701-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2012-02-01 614-701-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2012-02-01 614-701-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2011-06-14 614-872-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 ALTON OH
2010-08-05 614-973-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2010-02-08 614-468-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WORTHINGTN OH
2009-11-12 614-767-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 HILLIARD OH
2009-11-04 614-414-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2009-05-12 614-822-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2009-04-06 614-659-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2008-11-14 614-468-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WORTHINGTN OH
2008-10-24 614-553-9XXX 9000–9999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2008-09-23 614-553-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2008-09-10 614-947-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2008-09-04 614-269-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2008-07-01 614-822-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2008-06-10 614-944-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2008-04-08 614-495-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2008-03-05 614-383-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2007-12-13 614-232-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2007-12-13 614-233-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2007-10-17 614-553-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2007-06-26 614-944-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2007-05-03 614-534-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 HILLIARD OH
2007-04-26 614-553-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2007-03-28 614-754-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2007-03-28 614-754-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2007-03-28 614-754-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
2006-11-01 614-383-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2006-11-01 614-553-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
2006-10-13 614-733-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 PLAIN CITY OH
2006-09-15 614-396-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WORTHINGTN OH
2006-09-11 614-383-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2006-09-11 614-383-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 GAHANNA OH
2006-08-09 614-918-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WESTERVL OH
2006-08-07 614-396-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 WORTHINGTN 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.