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
2010-03-04 513-334-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2010-03-04 513-342-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2010-03-04 513-448-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2010-03-04 513-835-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-03-04 513-835-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-03-04 513-835-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-03-04 513-835-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-03-04 513-835-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-03-04 513-835-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-03-03 513-275-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2010-03-03 513-286-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CLERMONT OH
2010-02-16 513-402-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MONROE OH
2010-02-08 513-696-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEBANON OH
2010-02-02 513-448-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2010-02-01 513-202-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2010-02-01 513-223-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2010-02-01 513-273-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F OXFORD OH
2010-02-01 513-278-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL OH
2010-02-01 513-436-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WILLIAMSBG OH
2010-02-01 513-445-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2010-02-01 513-456-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEWTONSVL OH
2010-02-01 513-494-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SO LEBANON OH
2010-02-01 513-712-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 BETHANY OH
2010-02-01 513-726-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SEVEN MILE OH
2010-01-29 513-274-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2010-01-29 513-274-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2010-01-29 513-274-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2010-01-29 513-392-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2010-01-29 513-668-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2010-01-28 513-402-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MONROE OH
2010-01-22 513-468-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J TRENTON OH
2010-01-21 513-428-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F TRENTON OH
2010-01-08 513-282-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON OH
2009-12-23 513-448-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CINCINNATI OH
2009-12-23 513-448-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CINCINNATI OH
2009-11-23 513-934-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K LEBANON OH
2009-11-20 513-453-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-11-20 513-453-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-11-13 513-434-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J REILY OH
2009-11-11 513-767-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2009-11-09 513-250-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J CINCINNATI OH
2009-11-09 513-250-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CINCINNATI OH
2009-11-05 513-330-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C HAMILTON OH
2009-10-20 513-223-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2009-10-15 513-448-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-10-15 513-448-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-10-15 513-448-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-10-15 513-448-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-10-12 513-208-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-208-1XXX 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.