How to get the IP address from the Domain Name in Java?

Question

I am writing an application where I need the IP address. I have a domain name and I would like to know how to get the IP address from it. For example, "www.girionjava.com". How could I get the IP address of this website by programming in Java? Thanks.

score 32 · Answer 1 · answered Mar 17 '10 at 13:13

32

InetAddress giriAddress = java.net.InetAddress.getByName("www.girionjava.com");

Then, if you want the IP as a String

String address = giriAddress.getHostAddress();

answered Mar 17 '10 at 13:13

Powerlord

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score 9 · Answer 2 · answered Jul 01 '13 at 11:37

9

This should be simple.

InetAddress[] machines = InetAddress.getAllByName("yahoo.com");
for(InetAddress address : machines){
  System.out.println(address.getHostAddress());
}

answered Jul 01 '13 at 11:37

redoc

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Does this get all IPs on a round-robin DNS? – Joehot200 Dec 30 '15 at 18:06

score 6 · Answer 3 · edited Mar 17 '10 at 13:13

6

InetAddress.getByName("www.girionjava.com")

edited Mar 17 '10 at 13:13

Joachim Sauer

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answered Mar 17 '10 at 13:12

flybywire

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score 0 · Answer 4 · answered Mar 17 '10 at 13:18

0

(Extra mask in printing sine java considers all integers to be signed, but an IP address is unsigned)

InetAddress[] machines = InetAddress.getAllByName("yahoo.com");
for(InetAddress address : machines){
  byte[] ip = address.getAddress();
  for(byte b : ip){
    System.out.print(Integer.toString(((int)b)&0xFF)+".");
  }
  System.out.println();
}

answered Mar 17 '10 at 13:18

M. Jessup

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This assumes that you'll be getting only IPv4 adresses. IPv6 adresses are formatted differently, so you shouldn't manually format it anyway. – Joachim Sauer Mar 17 '10 at 13:22

How to get the IP address from the Domain Name in Java?

4 Answers4

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