NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026

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 513
CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 44
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
2026-01-09 513-380-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B FELICITY OH
2023-02-16 513-798-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MORNINGSUN OH
2022-04-15 513-949-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B WAYNESVL OH
2018-03-19 513-466-5XXX 5000–5999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2018-03-19 513-466-6XXX 6000–6999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2018-03-19 513-466-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2016-08-24 513-466-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2016-08-24 513-466-3XXX 3000–3999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2014-05-09 513-486-9XXX 9000–9999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2014-05-09 513-664-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B OXFORD OH
2013-05-23 513-402-3XXX 3000–3999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MONROE OH
2008-03-11 513-280-5XXX 5000–5999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B OXFORD OH
2008-02-08 513-273-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B OXFORD OH
2008-02-08 513-273-8XXX 8000–8999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B OXFORD OH
2008-01-25 513-204-6XXX 6000–6999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-12-07 513-234-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-12-06 513-204-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-10-12 513-217-3XXX 3000–3999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MIDDLETOWN OH
2007-10-12 513-217-8XXX 8000–8999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MIDDLETOWN OH
2007-07-20 513-445-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-06-22 513-445-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-06-21 513-204-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-06-21 513-204-8XXX 8000–8999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-05-11 513-273-9XXX 9000–9999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B OXFORD OH
2007-03-29 513-428-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B TRENTON OH
2007-03-21 513-204-5XXX 5000–5999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-01-16 513-204-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2006-11-14 513-204-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2006-09-26 513-234-3XXX 3000–3999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2006-08-07 513-234-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2006-08-07 513-234-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2006-05-10 513-282-6XXX 6000–6999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B LEBANON OH
2005-12-07 513-282-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B LEBANON OH
2005-10-28 513-234-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2005-01-19 513-204-3XXX 3000–3999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2004-12-28 513-217-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MIDDLETOWN OH
2004-11-02 513-204-4XXX 4000–4999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2004-09-14 513-217-6XXX 6000–6999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MIDDLETOWN OH
2004-06-23 513-360-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MONROE OH
2004-05-20 513-217-5XXX 5000–5999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MIDDLETOWN OH
2004-03-19 513-770-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2004-03-19 513-770-2XXX 2000–2999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2003-11-04 513-217-4XXX 4000–4999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MIDDLETOWN OH
2003-11-04 513-360-0XXX 0000–0999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MONROE OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.