>10+ years ago it was common to have your phone + postal address on whois

This is the .dk TLD today, and it's the reason I've never posted my website here. The .dk registry (punktum.dk) is run by absolute clowns.

On the other hand, the first thing I do before spending money on a danish website is "whois eksempel.dk", and if it doesn't return a danish address (and wasn't created recently), I'm out.