We have a working website for more than a year. Everything was ok, site worked, appeared in the relevant Google searches etc.Now, one day we discover that the site totally removed from Google Search results.(I don't complain that it's low, not that). It just never appears, even if I search Google for the site name itself, it does not shows.The site  subscribed to Google Webmaster Tools, Google Analytics and AdWords (currently no Ad campaigns are running). All these tools show no single warning. We received no complain email or anything.I don't quite understand what could be the reason or is it a bug in a Google (?!)Bing does not show the website either, but we never checked bing before.Site does appear on Yahoo Search. On ask.com it does not appear.Any clue would be helpful.One thing that I can think of - we are a dynamic DNS provider and we give to our users, domains like user.website.com. It is possible that some user may use that domain for some malicious activity, like sending spam or running a malware website or anything else.I know that some antivirus (I think avira), probably because of the aforementioned reason, marks our website as a malware site.The site in question is https://www.net-me.net.
Suddenly website stopped to appear at Google Search
google search;google index;bing
Google banned your website only because that users may use your domain for malicious activity. Google don't like those activity and so that only your website last ranking. Otherwise Google may banned you by Penguin 2.0 update. This update targets mainly on the websites that follows link farming techniques and having bad and spamming inbound links. If your website contains irrelevant or spamming porn website backlinks then it would be the reason.How to Get back your website?Check all your backlinks using Google Webmaster Tools of your website (Go to GWM click 'Traffic' again click 'Links to your site') If you find any bad backlinks, request those website owners to remove your links or otherwise disavow those links using Google Disavow Tool.Finally request Google to reconsider your website using Google Reconsideration FormIf you do these steps there may be more possible for your website to get back in Google results.