I have a domain name and vps (vesta) in OVH. I noticed that Google has indexed about 8,000 addresses of my domain that start with https://ns1.mydomain.com and about 90,000 addresses https://ns2.mydomain.com - A lot of URLs are indexed in 3 versions: https: // www. , https: // ns1. , https: // ns2 - Why is this happening? Please help.