Finding the IP address of a domain

Question

How can I find the IP address of an arbitrary domain? I want to get the IP address from the DNS server.

Michael Kohl · Accepted Answer · 2014-10-16T16:24:46.633

36

require 'socket'
IPSocket::getaddress('www.google.com') #=> "74.125.79.147"

edited Oct 16 '14 at 16:24

answered Apr 21 '11 at 10:16

Michael Kohl

lulalala · Answer 2 · 2016-01-30T12:16:48.280

13

Resolv is on a higher level than Socket, so will use more resources. However it has the ability to find all the ip addresses of a domain

require 'resolv'
Resolv.getaddresses("www.ruby-lang.org")

edited Jan 30 '16 at 12:16

answered Apr 23 '15 at 05:06

lulalala

score 2 · Answer 3 · answered Apr 21 '11 at 10:30

2

Try going through the shell

domain = "google.com"
`host #{domain}`.match(/(\d{1,3}\.){3}\d{1,3}/).to_s
#=> "74.125.39.99"

answered Apr 21 '11 at 10:30

edgerunner

score 1 · Answer 4 · edited Jan 30 '16 at 11:53

1

Try this code:

require 'resolv'
puts Resolv.getaddresses("www.panfu.dk")

edited Jan 30 '16 at 11:53

Tunaki

answered Jan 30 '16 at 11:49

Rehman Ahmed

score 0 · Answer 5 · answered Jan 30 '16 at 12:07

0

you always can enter http://who.is/ and enter the url of the ip you're seeking for

answered Jan 30 '16 at 12:07

Ori Wiesel

score -4 · Answer 6 · answered Apr 21 '11 at 10:58

-4

This is the java script code which will retrun the client's IP as json object

<script type="text/javascript">
function knowYourIP(json){
  document.write(json.ip); 
}

<script type="text/javascript" src="http://jsonip.appspot.com/?callback=knowYourIP"></script>

answered Apr 21 '11 at 10:58

9ikhan

-1 OP was not looking for client address, but for a way to look up the IP of an arbitrary domain. – Michael Kohl Apr 21 '11 at 13:16
okies, i misunderstood the question. but can't we get it thru like ping www.google.com? – 9ikhan Apr 21 '11 at 14:40
1

OP wanted a Ruby answer, he got a Ruby answer and it was accepted. :-) – Michael Kohl Apr 21 '11 at 15:05

6 Answers6