.to is the Internet country code top-level domain (ccTLD) of the island kingdom of Tonga.
The government of Tonga sells domains in its ccTLD to any interested party. Because to is a useful English preposition, it became popular to craft memorable URLs called domain hacks that take advantage of this, such as (bogus example) http://look.to/wikipedia or Refused's page.to/come.
The .to ccTLD is administered by the Tonga Network Information Center (Tonic).
The city of Toronto, in Ontario, Canada, has TO (pronounced Tee-O) as its nickname. Therefore, the .to extension is used by many small businesses located in Toronto, despite Canada's own .ca. The .to extension is also used by some torrent sites.
As the .to domains are to be paid for, all normal DNS operations are possible and no advertisements are forced upon you. Some domains are free, like .edu.to, but only to real Tongan schools, courtesy tonic. At this moment businesses registered in Tonga can also get free domains. People who sell on .to domains can claim a bonus.
.to is one of few ccTLD that (officially) does not maintain a (public) whois database providing registrant information [1
Journal of the Violin Society of America 可能对制琴师们有用一写. 对拉琴匠们觉得The Strings Magazine (wwhttp://www.stringsmagazine.com/) 更有用. 一年37美元订费.比The Strad便宜多了(一年101美元).