Domain names with different suffixes may have different naming rules. You must follow the corresponding domain naming rules to register a domain name and pass the domain name review. This topic describes the naming rules for Chinese and English domain names, and other special domain names. You can study the corresponding rules based on your business requirements and plan your domain name.

Naming rules for Chinese domain names

A Chinese domain name must comply with the following rules:
  • The Chinese domain name must contain at least one Chinese character and can contain letters (A to Z, case-insensitive), digits (0 to 9), and hyphens (-).
  • The domain name must be registered in simplified or traditional Chinese. For most domain name registrars, a domain name in simplified Chinese is equivalent to its traditional Chinese form. However, if a domain name is registered in simplified Chinese, the equivalent domain name in traditional Chinese can no longer be registered. The reverse operation also applies.
  • The domain name cannot start or end with a hyphen (-), plus sign (+), at sign (@), ampersand (&), or space.
  • The domain name cannot contain only letters or digits.
  • The domain name cannot contain consecutive hyphens (--) or only one hyphen (-). A hyphen cannot be placed at the beginning or end of a domain name.
  • The Punycode for the domain name cannot exceed 63 characters in length.
  • Some domain names do not support Chinese characters, such as .com.cn, .net.cn, and .org.cn domain names.

Naming rules for English domain names

An English domain name must comply with the following rules:
  • The domain name can contain letters (A to Z, case-insensitive), digits (0 to 9), and hyphens (-). It cannot contain spaces or special characters, such as

    exclamation points (!), dollar signs ($), ampersands (&), and question marks (?).

  • The domain name cannot contain consecutive hyphens (--) or only one hyphen (-). A hyphen cannot be placed at the beginning or end of a domain name.
  • The domain name cannot exceed 63 characters in length.

Naming rules for .中国, .cn, .公司, and .网络 domain names

The China Internet Network Information Center (CNNIC) issued the Notice on Adjusting the Standards for Auditing Domain Names . If the word "中国", "国家", "中华", or "全国" is used in a .中国, .cn, .公司, or .网络 domain name that is registered for an organization, the registration of the domain name must be applied for by the corresponding trademark holder. Individuals or non-trademark holder organizations cannot apply to register the domain name without prior authorization.

For example, the registration of the 中国律师协会.中国 domain name can only be applied for by the corresponding trademark holder, or specifically, the China Lawyers Association. Before using the domain name, this organization must submit real-name verification materials within five days after the domain name is successfully registered and pass the CNNIC qualification review. If the registration application is submitted by an individual or a non-trademark holder organization, the application will not pass the CNNIC qualification review and the corresponding domain name will be directly deleted.