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
2014-05-22 513-630-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2014-05-15 513-869-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2014-05-15 513-895-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C HAMILTON 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
2014-05-08 513-464-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2014-05-08 513-657-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2014-05-06 513-428-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TRENTON OH
2014-05-06 513-438-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONROE OH
2014-05-06 513-705-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MIDDLETOWN OH
2014-04-28 513-760-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2014-04-28 513-892-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2014-04-25 513-296-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F REILY OH
2014-04-23 513-285-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2014-04-23 513-285-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2014-04-23 513-427-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL OH
2014-04-23 513-428-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F TRENTON OH
2014-04-23 513-438-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MONROE OH
2014-04-23 513-452-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2014-04-23 513-452-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2014-04-23 513-472-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MORROW OH
2014-04-23 513-480-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON OH
2014-04-23 513-480-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON OH
2014-04-23 513-486-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2014-04-23 513-486-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2014-04-23 513-491-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEWTONSVL OH
2014-04-23 513-536-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WILLIAMSBG OH
2014-04-23 513-760-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2014-04-23 513-760-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2014-04-23 513-783-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2014-04-23 513-783-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2014-04-16 513-491-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2014-04-16 513-491-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2014-04-11 513-592-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2014-04-11 513-592-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2014-04-11 513-592-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2014-04-11 513-592-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2014-04-11 513-592-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2014-04-11 513-773-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2014-04-08 513-592-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2014-04-08 513-592-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2014-04-08 513-718-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CLERMONT OH
2014-04-02 513-486-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C MASON OH
2014-03-28 513-712-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C BETHANY OH
2014-03-28 513-712-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C BETHANY OH
2014-03-28 513-712-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C BETHANY OH
2014-03-28 513-712-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C BETHANY OH
2014-03-28 513-712-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C BETHANY OH
2014-03-27 513-817-2XXX 2000–2999Assigned NUSO, LLC 732J CINCINNATI OH
2014-03-24 513-427-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BETHEL 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.