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 440
ONVOY, LLC - OH 2
EXIANT COMMUNICATIONS LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 2
NEW CINGULAR WIRELESS PCS, LLC - IL 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-06-07 440-207-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BEREA OH
2011-06-07 440-368-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MENTOR OH
2011-06-07 440-373-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WICKLIFFE OH
2011-06-07 440-571-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WILLOUGHBY OH
2011-06-07 440-600-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CHAGRINFLS OH
2011-05-26 440-252-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BEDFORD OH
2011-05-26 440-623-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BEREA OH
2011-05-26 440-752-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LORAIN OH
2011-05-18 440-695-4XXX 4000–4999Assigned BRIGHTSPEED OF OHIO, LLC 0630 AVON OH
2011-05-12 440-279-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARDON OH
2011-04-22 440-375-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F PAINESVL OH
2011-04-22 440-481-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F VICTORY OH
2011-04-22 440-652-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NOROYALTON OH
2011-04-22 440-753-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HILLCREST OH
2011-04-22 440-783-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F STRONGSVL OH
2011-04-22 440-925-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F TRINITY OH
2011-04-21 440-310-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 COLUMBISTA OH
2011-04-20 440-847-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J TRINITY OH
2011-04-15 440-925-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TRINITY OH
2011-03-18 440-584-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BRECKSVL OH
2011-03-09 440-368-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MENTOR OH
2011-03-04 440-379-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F KIRTLAND OH
2011-03-04 440-490-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CHESTERLD OH
2011-03-03 440-985-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AMHERST OH
2011-02-28 440-579-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C PAINESVL OH
2011-02-24 440-481-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2011-02-22 440-752-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LORAIN OH
2011-02-22 440-855-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2011-02-11 440-381-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2011-01-28 440-961-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K AVON LAKE OH
2011-01-26 440-381-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2011-01-26 440-381-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2011-01-26 440-600-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CHAGRINFLS OH
2011-01-25 440-384-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BAINBRIDGE OH
2011-01-21 440-252-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BEDFORD OH
2011-01-12 440-600-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CHAGRINFLS OH
2011-01-10 440-723-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ELYRIA OH
2011-01-07 440-606-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C KIRTLAND OH
2011-01-07 440-682-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C BURTON OH
2011-01-05 440-855-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ASHTABULA OH
2011-01-04 440-299-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MENTOR OH
2011-01-04 440-623-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BEREA OH
2011-01-04 440-638-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F STRONGSVL OH
2011-01-04 440-652-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F NOROYALTON OH
2010-12-29 440-935-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 OBERLIN OH
2010-12-22 440-384-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BAINBRIDGE OH
2010-12-22 440-400-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2010-12-22 440-400-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2010-12-22 440-400-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2010-12-22 440-400-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS 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.