Selected answers from the Dumb SEO Questions Facebook & G+ community.
Scott Clark: site:address-here.... or use the URL inspection tool in Google Search Console for more detail
JL Faverio: no that`s to see if it is indexed or not. but I have a cleint who has a complete website been up for years but it`s not listed at all, so I`m thinking someone sabotaged her site and/or Google officially removed it.
Scott Clark: I suggest you join the Webmaster Tools Hangouts and ask JohnMu about the domain (if you can share it) ... sometimes he will look at something for you if it appears to be an edge case.
Victoria Gitelshtein: JL Faverio what can be the reason to punish the site? what is the content? Did they have GSC and send sitemap to google ever?
Dennis Dubner: there could be a noindex tag on your clients website