Whois: A New Pure-Ruby Whois Gem
He needed a whois library for one of his projects, but found that the existing options didn't satisfy his requirement of being able to query both IP addresses and top level domains. Simone's offering replaces the original whois gem by Cyril Mougel, with which it's backward compatible.
Using the 'all-in-one' whois class-method will give you the default behaviour, with a timeout of 5 seconds. If you want more control you can initialize a new instance of the client:
Whois.whois("rubyinside.com") # => whois response for rubyinside.com client = Whois::Client.new client.timeout = 3 client.query("126.96.36.199") # => whois response for 188.8.131.52