Question

I want to get domain name from a given IP.
E.g If I give IP as “172.24.17.85” I should get only domain name like my domain name is sonata.net.

Any code snippet for this in C#?

Answer 1

Have you tried Dns.GetHostEntry?

Example:

using System;
using System.Net;

class Test
{
    static void Main(string[] args)
    {
        IPAddress addr = IPAddress.Parse("69.59.196.211");
        IPHostEntry entry = Dns.GetHostEntry(addr);
        Console.WriteLine(entry.HostName); // Prints "stackoverflow.com"
    }
}

Note that this didn’t work for the example you gave… if a reverse DNS lookup doesn’t work, I’m not sure what you can do.