NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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, last 30 days — NPA 513
BANDWIDTH.COM CLEC, LLC - OH 1
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
2014-03-24 513-452-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARRISON OH
2014-03-24 513-657-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CINCINNATI OH
2014-03-24 513-839-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OXFORD OH
2014-03-21 513-725-0XXX 0000–0999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-21 513-725-1XXX 1000–1999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-21 513-725-2XXX 2000–2999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-21 513-725-3XXX 3000–3999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-21 513-725-4XXX 4000–4999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-21 513-725-9XXX 9000–9999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-10 513-437-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2014-03-10 513-437-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2014-03-10 513-592-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 CINCINNATI OH
2014-03-07 513-409-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEBANON OH
2014-03-07 513-463-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2014-03-07 513-463-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2014-03-07 513-850-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEBANON OH
2014-03-06 513-435-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2014-03-06 513-760-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2014-03-06 513-760-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2014-03-06 513-802-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2014-03-06 513-813-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2014-03-04 513-657-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2014-03-04 513-657-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2014-02-27 513-592-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2014-02-27 513-915-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2014-02-20 513-802-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2014-02-19 513-855-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WAYNESVL OH
2014-01-23 513-447-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SHANDON OH
2014-01-22 513-855-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WAYNESVL OH
2014-01-21 513-813-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-813-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-813-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-813-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-813-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-815-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-815-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-815-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-21 513-815-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2014-01-15 513-342-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 BETHANY OH
2014-01-03 513-972-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MASON OH
2013-12-31 513-630-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-12-26 513-813-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-12-20 513-813-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2013-12-20 513-813-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2013-12-13 513-815-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-11-27 513-630-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-11-21 513-718-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLERMONT OH
2013-11-21 513-760-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LTL MIAMI OH
2013-11-21 513-893-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAMILTON OH
2013-11-14 513-630-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI 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.