@borkborkNFork seems to think this needs Readme.
Digimon is a rediculously small Sinatra app that does nothing but return DNS addresses and Domain registrars over a json API (though there are basic views).
Usage is simple:
-> For Dig just hit /lookup.json?url=google.com for JSON or /lookup/google.com for the HTML view
-> For Whois registrar name just hit /whois.json?url=google.com for JSON or /whois/google.com for the HTML view