To get the custom URL set up:
1. Choose the domain name. We recommend something like certificates.yourdomain.com.
Note that you won’t be able to display anything else on this particular subdomain.
2. CNAME your desired subdomain to www2.credential.net.
[A Canonical Name record (abbreviated as CNAME record) is a type of resource record in the Domain Name System used to specify that a domain name is an alias for another domain (the 'canonical' domain).]
3. Tell us when the CNAME is setup and we’ll complete the configuration.