> I mean you can arbitrarily type domain names with common TLDs in and see what happens. I've always been curious whether any search engine tries to index the

> I mean you can arbitrarily type domain names with common TLDs in and see what happens. I've always been curious whether any search engine tries to index the "disconnected web" by just war-dialing domains/IPs like this. > To some degree, DNS is a broadcast system for discovery. Sadly, there's no real way to build a "DNS spider." You could if you could send DNS AXFR queries for arbitrary zones; but DNS servers mostly don't respond to these without authentication.