How can Google only index one specific domain when I have multiple domains? These domains all have same code and content. Google seems to treat the rest like they are redirected to the one domain that is indexed.
For example my site is example.com and it is the same as example.net and example.org. I have same the same content and same code on all the domain names.
I haven’t implemented any robots.txt code or meta refresh that would prevent Google from crawling any of the sites. But when I check Google, only the example.com site is indexed. When I check example.net Google seems to think it is redirected to example.com because it shows that for the cached version of page in Google.
What is the reason behind it? All the domains are in working condition.