Question: Both .li and .ch are country codes under which naming system?
Related documents: [0]  [DOC] .ch is the country code top-level domain (ccTLD) for Switzerland in the Domain Name System of the Internet. Made available in 1987, only two years after the .com extension, it is administered by SWITCH Information Technology Services. [END] 
[1]  [DOC] .li is the Internet country code top-level domain (ccTLD) for Liechtenstein. The .li TLD was created in 1993. The domain is sponsored and administered by the University of Liechtenstein in Vaduz. Registration of .li domain names used to be managed by SWITCH, administrator of Switzerland's .ch ccTLD. In February 2013, SWITCH discontinued its .li registration service for private customers, delegating it to a number of recognized partner firms. [END] 
Answer: 
Domain Name System of the Internet
Domain Name System of the Internet