.ch is the Internet country code top-level domain (ccTLD) for Switzerland. It is administered by SWITCH Information Technology Services.
Domain names must be at least three letters long. Two letter domain names are restricted to the Swiss cantons, as well as the domain ch.ch of the Federal Chancellery of Switzerland. The only exception so far was the former domain of the Expo.02 which was held in Switzerland, www.expo.02.ch.
Registrations of internationalized domain names have been accepted since March 2004.