The China Internet Network Information Center (CNNIC) is an organization focused on Internet infrastructure, domain-name administration, and related technical services in China. Its website provides registration and support information for domain names including .CN, .中国, .公司, and .网络, as well as IPv4, IPv6, and autonomous system (AS) number resources. Users can find registration-service institutions and frequently asked questions, and organizations can access IP and AS allocation services.

CNNIC also offers technical and operational services for domain registries, including data hosting, brand protection, and SDNS solutions such as authoritative and recursive cloud DNS and DNS attack mitigation. Its product offerings include domain-resolution and monitoring and protection services. The center publishes Internet development statistics and research, including regular reports on China’s Internet development, digital consumption, small businesses, and generative AI applications. Its technology platforms include the Internet Domain Name Administration Technology National Engineering Laboratory, an Internet infrastructure big data platform, and a national domain-resource operations platform. CNNIC also shares industry news, notices, and information about conferences and research initiatives.