Copy and Pasting a url (i.e. "steemit.com" or "Twitter.com") into safeweb.norton.com gives you Norton/Symantec's rating. Alternatively, you can use their Safe Web search platform at search.norton.com although it uses ask.com to provide the results (gross tbh). Until recently, for Firefox users (and other browsers), there was an extension that showed you the Norton rating before you clicked on a website, but they have since discontinued that feature. I know besides myself, many others hope they bring that extension back.

P.S. Some acquaintances of mine use virustotal.com as kind of like the "kayak.com" of "is this website safe?" services, since they show other a lot of other website scanner ratings in one place.