Com-commercial organizations, industrial, commercial, financial and other enterprises.

Edu-Educational institutions Educational institutions

Government-government entity government department

Mil-Military, military organization

Network-Network operation and service center, Internet, information center (NIC) and operation center (NOC) are connected to the network.

Org-other organizations, various non-profit organizations.

Biz-web business guide, suitable for commercial companies (note: biz is the customary abbreviation of business).

Enterprises providing information services.

Pro-professional, a generic top-level domain name suitable for doctors, lawyers, accountants and other professionals.

Name-name, a generic top-level domain suitable for individual registration.

Coop-cooperation, a special top-level domain name suitable for commercial cooperatives.

Aero-aero, a special top-level domain suitable for the air transport industry.

Museum-museum, museum-specific top-level domain.

Mobi-domain name for mobile phone network

Asia-Domain name for Asian region.

Telephone domain names apply to telephones.

International organizations, international organizations

Us-type stands for the United States, with the second largest number of registrations in the world.

Tourism domain name, international domain.

Idv-for personal use

Generally speaking, only what you ask is common. You can refer to Baidu Encyclopedia for more details.