convert ip address to decimal and use it as address

for example www.google.com
74.125.71.106
put it in binary , 8 bit
74 -> 01001010
125 -> 01111101
71 -> 01000111
106 -> 01101010
in whole, it is 01001010011111010100011101101010
in decimal, it is 1249724266
and http://1249724266 will bring you to google.com [74.125.71.106]

another method
74*(256^3)+125*(256^2)+71*(256)+106
also get 1249724266