Looking at how it does reverse DNS lookups to try and map backwards... is there such thing as a crowdsourced database that resolves the most common domain name(s) that resulted in a given IP address? Seems like this would be tremendously useful for any sort of network tooling, but I can’t find any references from a quick search.
You do realize that multiple domains may be hiding behind the same IP address? This is very common with CDNs (although the bigger players can afford a static CDN IP, I guess)
