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
2013-03-12 513-215-0XXX 0000–0999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-1XXX 1000–1999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-2XXX 2000–2999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-3XXX 3000–3999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-4XXX 4000–4999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-5XXX 5000–5999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-6XXX 6000–6999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-7XXX 7000–7999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-8XXX 8000–8999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-03-12 513-215-9XXX 9000–9999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-02-28 513-630-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-02-26 513-760-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2013-02-26 513-760-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2013-02-18 513-268-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON OH
2013-02-18 513-268-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON OH
2013-02-18 513-268-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON OH
2013-02-18 513-334-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2013-02-18 513-492-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2013-02-18 513-622-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2013-02-18 513-630-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-02-12 513-620-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2013-02-12 513-620-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2013-02-12 513-704-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2013-02-12 513-704-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2013-02-12 513-704-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2013-01-31 513-340-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-01-23 513-704-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-01-23 513-704-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-01-23 513-704-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-01-23 513-704-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-01-14 513-620-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-01-09 513-716-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LTL MIAMI OH
2013-01-07 513-456-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2013-01-04 513-833-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-01-03 513-806-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-31 513-972-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 MASON OH
2012-12-31 513-972-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 MASON OH
2012-12-31 513-972-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MASON OH
2012-12-21 513-239-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2012-12-19 513-901-7XXX 7000–7999Assigned CITYNET OHIO, LLC - OH 036B WILLIAMSBG OH
2012-12-10 513-667-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-10 513-667-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-10 513-667-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-10 513-667-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-10 513-667-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-10 513-667-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-10 513-667-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-07 513-239-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LTL MIAMI OH
2012-12-07 513-609-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-12-06 513-239-9XXX 9000–9999Assigned 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.