How to do a DNS lookup

[Nigel Gilbert]

I have an IP address such as '111.222.111.222' and want to resolve this to a
domain name. What's the simplest Ruby code that will return the name?
There doesn't seem to be anything expressly designed to do this that I can
see in the net libraries, or am I missing something?

Thanx

Nigel

[ts]

>>>>> "N" == Nigel Gilbert <scs...@pop.ntlworld.com> writes:

N> I have an IP address such as '111.222.111.222' and want to resolve this to a
N> domain name. What's the simplest Ruby code that will return the name?
N> There doesn't seem to be anything expressly designed to do this that I can
N> see in the net libraries, or am I missing something?

You have resolv.rb in the distribution

pigeon% ruby -rresolv -e 'p Resolv.getname("138.102.114.1").to_s'
"moulon.moulon.inra.fr"
pigeon%

probably you need ruby >= 1.6.5

--

Guy Decoux