If the domain has no indexed pages, back links, page rank in google, does that means the domain is banned by google?
It doesn't mean its already banned by google if there's no back links. Its just happen if the certain link you post is not neccessary or not useful with the topic or thread.
What makes you think its is? First thing is you would see ( 0 ) results when you did a site:domain.com command
when you search google with site:domain.com, if it has no indexed page, this can mean 2 thinks. * domain is banned from google * domain is too new (like days or or one week)
You could give it ago in this tool http://www.searchenginegenie.com/google-banned-site-checker.php not sure if it will help you or not
Has the webmaster been violating Google rules such as mirror pages, etc.? What is the name of the domain so people in the forum can check it out for you. If it is rather new, for example it came online after the last update, then just wait til the next update.
It is 2 years old site, has 300+ indexed pages and 3000+ back links in yahoo. But there is no result in google, so I wonder is it banned by google.
Most likely, especially if you don't even see any result for your domain URL. There is no other explanation.
Sign up for the google sitemaps / webmaster tools and you can find out for certain. If you are - you can use https://www.google.com/webmasters/tools/reinclusion?hl=en It does actually work as long as you correct any problems. Possible innocent problems - duplicate content - incorrect redirects - robots.txt problems - custom 404 page that doesn't send the correct error header (this happened to me before)