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Few things you can try: Google the URL if it doesn't come up strong possibility it was de-indexed and has a penalty. Use a service like link detox which will roughly shows you what it thinks to be nasty. Majestic seo has a neat tool for finding out what it thinks of sites - https://www.majesticseo.com/reports/neighbourhood-checker Similar to above http://spyonweb.com/ can be handy for working out link wheels Look into the stats of the site e.g trust flow, authority etc.  recommend tools like Open site explorer, majestic seo or Hrefs. Research is the key and you could dig pretty deep Hope some of those help. but as to what Google thinks you're still going to have to figure that out on your own. Good luck