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
2009-08-10 513-372-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-08-03 513-340-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-08-03 513-341-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2009-07-13 513-492-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K MASON OH
2009-06-30 513-340-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-06-30 513-340-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-06-29 513-748-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-06-29 513-748-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-06-01 513-805-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2009-06-01 513-805-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2009-05-29 513-767-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2009-05-22 513-668-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2009-04-17 513-692-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-17 513-692-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-17 513-692-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-17 513-692-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-17 513-692-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-17 513-692-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-17 513-692-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-04-02 513-805-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2009-03-18 513-291-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2009-03-18 513-291-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2009-03-11 513-330-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K HAMILTON OH
2009-02-13 513-291-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2009-02-10 513-372-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CINCINNATI OH
2009-02-10 513-372-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CINCINNATI OH
2009-02-04 513-823-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-02-04 513-823-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-02-04 513-823-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-02-04 513-823-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-01-23 513-843-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K CLERMONT OH
2009-01-22 513-206-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-01-12 513-201-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CLERMONT OH
2009-01-12 513-202-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2009-01-12 513-239-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2009-01-12 513-278-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL OH
2009-01-12 513-291-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SEVEN MILE OH
2009-01-12 513-294-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEWTONSVL OH
2009-01-12 513-327-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WILLIAMSBG OH
2009-01-12 513-341-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2009-01-12 513-341-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2009-01-12 513-443-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2009-01-09 513-442-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2009-01-05 513-433-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2008-12-19 513-668-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2008-12-04 513-204-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2008-12-04 513-360-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MONROE OH
2008-12-04 513-393-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2008-12-04 513-428-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F TRENTON OH
2008-12-04 513-494-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON 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.