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convert an IP address to a hostname

convert an IP address to a hostname

using System;
using System.Net;

namespace ConsoleApplication3
{

class Class1
{

static void Main(string[] args)
{
IPHostEntry iphost = Dns.Resolve("127.0.0.1");

// HostName property holds the hostname
string hostname = iphost.HostName;
Console.WriteLine(hostname);
}
}
}