Internationalized domain names and History

The character set allowed in the Domain Name System initially prevented the representation of names and words of many languages in their native scripts or alphabets. ICANN approved the Punycode-based Internationalized domain name (IDNA) system, which maps Unicode strings into the valid DNS character set. For example, københavn.eu is mapped to xn--kbenhavn-54a.eu. Some registries have adopted IDNA.

History

On 15 March 1985, the first commercial Internet domain name (.com) was registered under the name Symbolics.com by Symbolics Inc., a computer systems firm in Cambridge, Massachusetts.

By 1992 fewer than 15,000 dot.com domains were registered.

In December 2009 there were 192 million domain names.[9] A big fraction of them are in the .com TLD, which as of March 15, 2010 had 84 million domain names, including 11.9 million online business and e-commerce sites, 4.3 million entertainment sites, 3.1 million finance related sites, and 1.8 million sports sites.[10]