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
2013-06-14 513-801-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-06-14 513-801-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-06-14 513-801-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-06-14 513-801-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-06-13 513-456-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2013-06-13 513-593-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OXFORD OH
2013-06-11 513-495-0XXX 0000–0999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-1XXX 1000–1999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-2XXX 2000–2999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-3XXX 3000–3999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-4XXX 4000–4999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-5XXX 5000–5999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-6XXX 6000–6999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-7XXX 7000–7999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-8XXX 8000–8999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-495-9XXX 9000–9999Assigned CINCINNATI BELL 9348 CLERMONT OH
2013-06-11 513-802-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-11 513-802-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2013-06-05 513-806-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-06-05 513-806-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-06-05 513-806-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2013-05-24 513-873-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-24 513-873-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2013-05-23 513-402-3XXX 3000–3999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MONROE OH
2013-05-20 513-409-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEBANON OH
2013-05-20 513-685-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CLERMONT OH
2013-05-03 513-517-0XXX 0000–0999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-1XXX 1000–1999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-2XXX 2000–2999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-3XXX 3000–3999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-4XXX 4000–4999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-5XXX 5000–5999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-6XXX 6000–6999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-7XXX 7000–7999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-8XXX 8000–8999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-05-03 513-517-9XXX 9000–9999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2013-04-11 513-805-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K HAMILTON OH
2013-04-11 513-972-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K MASON OH
2013-04-09 513-461-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F OXFORD OH
2013-04-09 513-461-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F OXFORD OH
2013-04-09 513-461-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F OXFORD OH
2013-03-22 513-806-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2013-03-19 513-806-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI 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.