example:adulu.com got back links from 1.adulu.com 2.adulu.com 3.adulu.com google would considered external or internal links? thank you
If yoursite. com is getting a backlink from something.yoursite. com this would be an external link if I understand you correctly. However, I don't think google likes it so much if you are creating a bunch of subdomains and linking to your site for the sole purpose of generating more backlinks. It might end up biting you in the rump if you do too many.