Dumps every IPv4 IP address to a text file.

EveryIPv4

using System;
using System.IO;
namespace EveryIPv4{
    class Program{
        static void Main(string[] args){
            using(StreamWriter sw=new StreamWriter("dump.txt"))
                for(uint u=uint.MinValue;u<=uint.MaxValue;u++)
                    for (byte b=0;b<4;b++)
                        sw.Write(((u>>((3-b)*8))&0xFF).ToString()+(b==3?'\n':'.'));
        }
    }
}