[5] CNNIC allocates Internet Protocol (IP) addresses and AS Numbers to domestic ISPs and users.

CNNIC is a National Internet Registry (NIR) acknowledged by the Asia-Pacific Network Information Center (APNIC).

[6] CNNIC is responsible for the creation and maintenance of the state top-level network catalog database.

This database provides information on Internet users, web addresses, domain names, and AS numbers.

[citation needed] In July 2008, a broad alliance of Chinese online commerce stakeholders, including CNNIC, all major Chinese commercial banks and web hosting companies, founded the Anti-Phishing Alliance of China (APAC) in order to tackle phishing activities that abuse .cn sub-domain names.