Do subdomains have an impact on a root domain?
22427
Do subdomains help/hurt SEO?
102210
Subdomain versus new domain
32646
How exactly should I set up DNS to delegate authority for subdomains?
52428
Hide a Subdomain from Google/Search Engine SEO Result?
24305
Do short URLs obligate 301 redirects?
149615
Webmaster Tools, www and no-www, duplicate content and subdomains
70091
How to make DNS server propagate faster if you are a site owner?
104792
How to set up multitenant Route53 subdomains with parent domain not on Route53?
134891
How does pointing a CNAME on my domain to a service-provider's server enable them to offer customized services?
54096
List of Stack Exchange subdomains that are not mentioned in "All Sites"
59322
Access-Control-Allow-Origin Multiple Origin Domains?
67863
Is it possible for many domain names to share one IP address?
115608
Why not have one login to all stack subdomains?
4456
Why can't a CNAME record be used at the apex (aka root) of a domain?
119750
Nginx rules for subdomain multisite install (Bedrock)
28306
GSC: How to move a site from a domain to sub domain, sub folder or new domain with a sub folder?
16221
Subdomain versus subdirectory