1- can I have subdomain on another subdomain?
2- I have one multisite on my domain now I am thinking to create around 30 subdomain on this domain , can I do that and is there anything should I know about?
3- if I have subdomain for example subdomain.mydomain.com , can I create various subdomains on this subdomain for example subdomain.subdomain.mydomian.com or should have new domain for that?
4- what is the maximum number for subdomains on one domain? For example can I have 500,000 domains on one domain?