In this example we'll use 206.191.158.55. Enter the following keystrokes into the calculator exactly as shown:
206 * 256 + 191 = * 256 + 158 = * 256 + 55 =3468664375
The dword equivalent of the IP address will be the result. In this case, 3468664375. http://3468664375 Will take you to 206.191.158.55
A variation on the dword IP address is one where a portion of the IP address is similarly converted. This only works with the rightmost two or three numbers, not the leftmost.
Let's start again with 206.191.158.55. Leaving the "206" as it is, we do the same calculation with the last three numbers:
191 * 256 + 158 = * 256 + 55 = 12557879
Now we have: http://206.12557879/obscure.htm
158 * 256 + 55 = 40503
Which results in: http://206.191.40503/obscure.htm
Thanks http://www.pc-help.org/obscure.htm