When using the Whois gem:
1.9.3-p0 :001 > require "whois"
1.9.3-p0 :002 > Whois.available?("hjdfkjhdsjkhfkjdshjf.ie")
But using the CLI:
» ruby-whois hjdfkjhdsjkhfkjdshjf.ie
% Rights restricted by copyright; http://iedr.ie/index.php/mnudomregs/mnudnssearch/96
% Do not remove this notice
% Not Registered - The domain you have requested (hjdfkjhdsjkhfkjdshjf.ie) is not a registered .ie domain name.
.IE availability checking returns incorrect results (closes GH-155)
Fixed. Thank you very much.