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
2012-02-01 513-516-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-02-01 513-516-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-02-01 513-516-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-02-01 513-516-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-02-01 513-516-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-02-01 513-516-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-02-01 513-601-0XXX 0000–0999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2012-01-24 513-850-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2012-01-24 513-850-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2012-01-19 513-279-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2012-01-19 513-279-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2012-01-11 513-512-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2012-01-09 513-433-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2011-12-29 513-580-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2011-12-21 513-510-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-510-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-21 513-580-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-12-15 513-507-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-15 513-507-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-15 513-507-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-15 513-507-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-15 513-507-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-15 513-507-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-07 513-507-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 CINCINNATI OH
2011-12-01 513-507-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-01 513-507-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-12-01 513-507-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-11-17 513-413-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-17 513-413-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-14 513-212-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-11-14 513-212-1XXX 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.