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 34 · Answer 1 · answered Mar 17 '10 at 13:13

34

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

11

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

score -1 · Answer 5 · edited Dec 09 '22 at 08:13

-1

The InetAddress class in java.net has some static methods to do this.

        InetAddress a = InetAddress.getByName ("www.girionjava.com");
        System.out.println(a.getHostAddress());

This is very basic stuff, for more complete control over DNS queries, you will have to use additional libraries.

edited Dec 09 '22 at 08:13

rmalchow

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answered Dec 08 '22 at 09:23

Jenipher Filberth

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Welcome to Stack Overflow! Please read [answer] and [edit] your answer to contain an explanation as to why this code would actually solve the problem at hand. Always remember that you're not only solving the problem, but are also educating the OP and any future readers of this post. – Adriaan Dec 08 '22 at 09:27

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

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