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
2013-08-12 513-283-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-08-12 513-283-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-08-12 513-283-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-08-12 513-283-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-08-12 513-571-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2013-08-12 513-773-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2013-08-12 513-802-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-08-12 513-882-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-08-12 513-882-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-08-12 513-882-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-07-24 513-630-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2013-07-22 513-409-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LEBANON OH
2013-07-19 513-649-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2013-07-15 513-972-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MASON OH
2013-07-09 513-438-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MONROE OH
2013-07-03 513-802-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-07-03 513-802-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-07-01 513-401-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2013-07-01 513-401-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2013-07-01 513-401-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2013-07-01 513-401-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2013-07-01 513-401-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2013-07-01 513-486-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MASON OH
2013-06-28 513-283-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2013-06-28 513-472-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K MORROW OH
2013-06-28 513-491-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K NEWTONSVL OH
2013-06-26 513-869-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2013-06-20 513-255-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K OXFORD OH
2013-06-20 513-402-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K MONROE OH
2013-06-20 513-409-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LEBANON OH
2013-06-20 513-427-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K BETHEL OH
2013-06-20 513-433-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K MIDDLETOWN OH
2013-06-20 513-447-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SHANDON OH
2013-06-20 513-468-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K TRENTON OH
2013-06-20 513-480-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SO LEBANON OH
2013-06-20 513-536-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K WILLIAMSBG OH
2013-06-20 513-630-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LTL MIAMI OH
2013-06-20 513-644-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K BETHANY OH
2013-06-20 513-701-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K MASON OH
2013-06-20 513-715-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K HARRISON OH
2013-06-20 513-718-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K CLERMONT OH
2013-06-20 513-795-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K HAMILTON OH
2013-06-20 513-855-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K WAYNESVL OH
2013-06-18 513-801-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-18 513-801-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-18 513-802-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-18 513-802-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-18 513-802-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-18 513-876-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K FELICITY OH
2013-06-14 513-630-0XXX 0000–0999Assigned 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.