Why can't a domain's root be a CNAME?
4456
Why can't a CNAME record be used at the apex (aka root) of a domain?
57308
Why won't Webmaster Tools let me set a preferred domain? (says to verify, but it should already be)
99536
Any evidence that subdomain can help with domain authority and vice-versa?
16221
Subdomain versus subdirectory
21001
How do I rename a domain and preserve SEO?
141718
Why can't Windows home editions connect to domains?
52346
Subdomain or domain?
42342
Website and Active Directory domain share the same name
82077
Why is the root directory denoted by a / sign?
7912
How does ServerName and ServerAlias work?
109435
Certbot misbehaves by creating a certificate for a domain with "www"
139340
How to resolve a hostname via nsswitch?
89025
How should I setup separate MX records for a subdomain?
19398
Clarification of why DNS zone files require NS records
143498
Are the new generic top level domains confusing to users? Should they be used or avoided?
89269
Is it possible to set two MX records for one domain?
141224
Why do DNS queries fail if the first nameserver is not recursive?