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 219
LEVEL 3 COMMUNICATIONS, LLC - IN 115
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
2023-05-11 219-270-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DEMOTTE IN
2022-11-16 219-294-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ST JOHN IN
2022-11-02 219-599-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WHITING IN
2021-09-07 219-946-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAKE STA IN
2021-04-27 219-274-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2021-03-26 219-273-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HIGHLAND IN
2020-08-08 219-259-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MICHIGANCY IN
2020-06-25 219-234-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 KENTLAND IN
2020-02-19 219-220-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 REYNOLDS IN
2018-05-10 219-777-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2014-08-07 219-200-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2014-03-26 219-850-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 PORTAGE IN
2013-10-01 219-224-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BROOK IN
2013-06-14 219-321-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2013-03-13 219-307-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 VALPARAISO IN
2013-03-12 219-585-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WESTVILLE IN
2013-01-25 219-945-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HOBART IN
2012-11-30 219-214-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MICHIGANCY IN
2012-11-30 219-250-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CHESTERTON IN
2012-11-09 219-964-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 RENSSELAER IN
2012-03-27 219-515-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2012-02-09 219-212-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MEDARYVL IN
2012-02-09 219-215-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAKE VLG IN
2012-02-03 219-205-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SAN PIERRE IN
2012-02-03 219-233-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GOODLAND IN
2012-02-03 219-234-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 KENTLAND IN
2012-02-03 219-335-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FRANCESVL IN
2012-02-03 219-544-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LA CROSSE IN
2012-02-03 219-747-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WOLCOTT IN
2012-01-27 219-224-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BROOK IN
2011-12-14 219-200-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2011-09-12 219-852-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HAMMOND IN
2011-01-20 219-359-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2010-09-14 219-230-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HAMMOND IN
2010-09-14 219-285-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MOROCCO IN
2010-09-14 219-354-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 E CHICAGO IN
2010-09-14 219-513-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HIGHLAND IN
2010-09-14 219-690-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LOWELL IN
2010-08-27 219-293-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2010-07-21 219-488-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN
2009-10-06 219-525-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MERRILLVL IN
2009-09-03 219-697-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MOROCCO IN
2009-08-05 219-809-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MICHIGANCY IN
2008-11-25 219-359-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2008-11-25 219-359-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GARY IN
2008-10-31 219-595-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HIGHLAND IN
2008-05-06 219-380-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LA PORTE IN
2008-02-14 219-728-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CHESTERTON IN
2008-02-01 219-440-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2008-02-01 219-488-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CROWNPOINT IN

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.