.cn
Appearance
.cn is the country code top-level domain for China. It is managed by the China Internet Network Information Center (CNNIC).[1]
Rules and Restrictions
Domain name registry and registrars shall set up within the territory of China corresponding emergency response backup systems and back up on a regular basis domain name registration data.
Domain name registry and registrars may not provide services for domain names containing any of the following contents:
- being against the basic principles prescribed in the Constitution;
- jeopardizing national security, leaking state secrets, intending to overturn the government, or disrupting state integrity;
- harming national honor and interests;
- instigating hostility or discrimination between different nationalities, or disrupting the national solidarity;
- violating the state religion policies or propagating cult and feudal superstition;
- spreading rumors, disturbing public order or disrupting social stability;
- spreading pornography, obscenity, gambling, violence, homicide, terror or instigating crimes;
- insulting, libeling against others and infringing other people's legal rights and interests; or
- other contents prohibited by laws and administrative regulations.
Second-level Domains
Second-level domains should be chosen in accordance with the nature of the entity applicant:
- .ac.cn : Scientific research institutions
- .com.cn : Industrial, commercial, financial, and other enterprises
- .edu.cn : Education institutions (registration restricted)
- .gov.cn : Chinese government organizations (registration restricted)
- .mil.cn : Chinese national defense organizations (registration restricted)
- .net.cn : Organizations providing Internet services
- .org.cn : Not-for-profit organizations
- .政务.cn : Party and government services (registration restricted)
- .公益.cn : Not-for-profit organizations (non-profit organization registration required)[2] [3]
Characters
- Users can comply with the naming rules of simply using or combining with English letters (A-Z, case-insensitive), Arabic numerals (0-9) and half-angle hyphen “-” (i.e., middle transverse line), but not spaces and special characters (such as!, $, & and ?);
- “-” can not appear continuously, separately registered or placed at the beginning or end;
- at most 63 characters can be registered. The maximum length for 中文.CN registration should be calculated after transferred into punycode. The transcoding method refers to "Online Transcoding of Chinese Domain Names".