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 440
LEVEL 3 COMMUNICATIONS, LLC - OH 141
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
2026-04-01 440-928-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CONNEAUT OH
2025-08-14 440-849-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LORAIN OH
2025-08-14 440-849-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LORAIN OH
2025-08-14 440-849-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LORAIN OH
2025-01-14 440-890-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MENTOR OH
2024-10-01 440-750-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 PARKMAN OH
2023-02-08 440-859-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MADISON OH
2023-01-11 440-852-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CHARDON OH
2021-01-26 440-468-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BAINBRIDGE OH
2021-01-26 440-491-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GENEVA OH
2021-01-26 440-557-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 RUSSELL OH
2021-01-26 440-659-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 PERRY OH
2021-01-26 440-739-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEWBURY OH
2021-01-26 440-904-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 E CLARIDON OH
2020-07-14 440-290-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MENTOR OH
2020-05-26 440-595-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 VERMILION OH
2018-10-19 440-597-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AMHERST OH
2018-05-15 440-961-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AVON LAKE OH
2017-12-26 440-517-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AVON OH
2016-10-07 440-535-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NORTHEATON OH
2015-12-31 440-444-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LORAIN OH
2015-09-09 440-406-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ELYRIA OH
2015-07-28 440-291-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 AUSTINBURG OH
2015-07-28 440-335-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 KINGSVILLE OH
2015-06-30 440-830-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LORAIN OH
2013-11-25 440-965-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BIRMINGHAM OH
2013-11-13 440-294-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEW LYME OH
2013-11-12 440-624-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 JEFFERSON OH
2013-11-12 440-689-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ANDOVER OH
2013-04-29 440-426-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MIDDLEFLD OH
2013-04-22 440-746-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BRECKSVL OH
2013-01-09 440-261-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ASHTABULA OH
2012-09-13 440-226-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CHARDON OH
2012-02-08 440-401-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TRINITY OH
2012-02-03 440-345-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 VICTORY OH
2011-08-31 440-723-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ELYRIA OH
2011-04-15 440-925-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TRINITY OH
2011-03-09 440-368-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MENTOR OH
2011-01-10 440-723-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ELYRIA OH
2010-09-10 440-723-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ELYRIA OH
2010-08-27 440-262-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BRECKSVL OH
2010-08-27 440-490-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CHESTERLD OH
2010-08-27 440-510-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WILLOUGHBY OH
2010-08-27 440-544-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLCREST OH
2010-08-27 440-652-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NOROYALTON OH
2010-08-27 440-745-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GATESMILLS OH
2010-08-27 440-783-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 STRONGSVL OH
2010-08-27 440-793-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 OLMSTEDFLS OH
2010-08-27 440-833-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WICKLIFFE OH
2010-08-27 440-853-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 PAINESVL 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.