NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 567
ONVOY, LLC - OH 2
EXIANT COMMUNICATIONS LLC 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 1
INTRADO COMMUNICATIONS, LLC 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
2012-03-21 567-301-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FINDLAY OH
2012-03-19 567-307-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MANSFIELD OH
2012-03-16 567-938-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TIFFIN OH
2012-03-14 567-280-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FREMONT OH
2012-03-08 567-307-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K MANSFIELD OH
2012-03-08 567-743-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK OH
2012-03-02 567-307-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2012-03-02 567-307-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2012-02-29 567-302-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MAUMEE OH
2012-02-17 567-218-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-17 567-218-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-17 567-218-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-17 567-218-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-16 567-301-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K FINDLAY OH
2012-02-16 567-876-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MT GILEAD OH
2012-02-15 567-280-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FREMONT OH
2012-02-15 567-298-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-15 567-298-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-15 567-298-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2012-02-15 567-455-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SYLVANIA OH
2012-02-15 567-938-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TIFFIN OH
2012-02-10 567-302-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MAUMEE OH
2012-02-09 567-301-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FINDLAY OH
2012-01-25 567-455-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SYLVANIA OH
2012-01-25 567-455-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SYLVANIA OH
2012-01-24 567-233-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARENGO OH
2012-01-24 567-307-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MANSFIELD OH
2012-01-17 567-938-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C TIFFIN OH
2012-01-09 567-245-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C FOSTORIA OH
2012-01-09 567-280-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C FREMONT OH
2012-01-09 567-297-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C HOLLAND OH
2012-01-09 567-301-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C FINDLAY OH
2012-01-09 567-302-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MAUMEE OH
2012-01-09 567-331-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C PERRYSBURG OH
2012-01-09 567-938-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C TIFFIN OH
2011-12-29 567-302-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MAUMEE OH
2011-11-29 567-302-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MAUMEE OH
2011-11-18 567-303-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2011-11-15 567-210-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7158 BRYAN OH
2011-10-31 567-280-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREMONT OH
2011-10-31 567-455-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SYLVANIA OH
2011-10-28 567-825-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIMA OH
2011-10-12 567-280-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 FREMONT OH
2011-09-15 567-287-3XXX 3000–3999Assigned WINDSTREAM OHIO, LLC 0665 DELTA OH
2011-09-15 567-303-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MANSFIELD OH
2011-09-15 567-305-3XXX 3000–3999Assigned WINDSTREAM OHIO, LLC 0665 KENTON OH
2011-09-06 567-209-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEXINGTON OH
2011-08-18 567-281-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEW RIEGEL OH
2011-08-18 567-281-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NEW RIEGEL OH
2011-08-08 567-231-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHESTERVL 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.