New posts in subdomain

What is a hostname versus a computer name versus a subdomain versus www?

If I own a domain do I own all of its sub domains?

Wildcard vhosts on Nginx

How did someone point a sub-domain of our domain to someone else's IP address?

Apache .htaccess trick to authenticate only once for all subdomains? [duplicate]

subdomain of a subdomain?

What is the purpose of the WWW subdomain?

Apache .htaccess trick to authenticate only once for all subdomains?

Is there a maximum subdomain depth?

Create subdomains on the fly with .htaccess (PHP)

For DNS and SSL do I need a separate certificate for every (DNS RR) A record?

How do you have one IP address and many websites?

Do I have to buy a second wildcard certificate for a subdomain?

Wildcard DNS and subdomains

Share cookie between subdomain and domain

Does each subdomain need it's own SSL certificate?

What type of DNS record is needed to make a subdomain?

Fix missing ssl-cert for subdomain www. using redirect or similar

Wildcard SSL certificate for second-level subdomain

How do I redirect subdomains to a different port on the same server?