.io  Registered Domain Names List  / .io zone file

.io (British Indian Ocean Territory) Registered Domain Names List Download / .io zone file

The Internet country code top-level domain (ccTLD) .io is assigned to the British Indian Ocean Territory.

The .io domain is administered by the Internet Computer Bureau, a domain name registry company based in the United Kingdom.

The .io domain extension has existed since 1997, and has grown steadily in popularity ever since. .io domains now compose 0.1% of all websites.

The first IO-related domain to be registered was the domain data-io.com, which when it was registered in late 1986 was the 45th domain name ever to be registered.

The first .io domain was not registered until 1998, when Yahoo Inc registered the domain yahoo.io.

download .io zone file


including .io .com.io

More than 172,879 domains included.

.io domain names list

Release date: November 7, 2015
Last updated:December 1, 2018
Software application type: Database
File format: .csv

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