Whether paid resolution or free resolution, user need to bind a domain name first. After the domain name is bound successfully, enable resolution service by reference to the following steps:

1.Ensure that the domain name is in normal state and that it has been filed (no mandatory filing is needed for high defense version of resolution service) 2.Modify NS server address as: ns1.bdydns.cn ns2.bdydns.cn 3.It takes 24h for the whole network to update after modification of NS server, please wait patiently for NS to be effective. 4.Free cloud resolution service can be used for Baidu AI Cloud domain name, with expiration date consistent with domain name.