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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.〔(【引用サイトリンク】title=IANA — .io Domain Delegation Data )〕 Google currently treats .io as a generic top-level domain (gTLD) because "users and webmasters frequently see (domain ) more generic than country-targeted".〔(【引用サイトリンク】url=https://support.google.com/webmasters/bin/answer.py?hl=en&answer=1347922 )〕 ==History== 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.〔(【引用サイトリンク】title=Historical trends in the usage of top level domains for 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.〔(【引用サイトリンク】 The Oldest .io domains )〕 The first .io domain was not registered until 1998, when Yahoo Inc registered the domain yahoo.io.〔(【引用サイトリンク】title=NIC.IO - The Indian Ocean .IO Domain Registry and Network Information Centre - Whois Search )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「.io」の詳細全文を読む スポンサード リンク
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