So most of the time before going on a first date, I will get a girls number, either from an app or from in person organically. And there are free websites where you can enter their cell phone number and most of the time their public information will be shown (full name, address, previous addresses). It's almost similar to how the White Pages worked a long time ago.
If I'm able to find out someone's full name I will do a quick social media and google search of their name. Is this too psycho of me to do before going on a date with someone?