Netwrck 
Identicon
Have you ever wanted to have a unique avatar that no one else has? Well, now you can with Identicons! Identicons are visual representations of a hash value, usually of an IP address, that serves to identify a user of a computer system. They're like snowflakes, no two are alike! And because they're based on a hash value, they're also anonymous, so you can use them without worrying about your privacy.
The original Identicon was a 9-block graphic, but the representation has been extended to other graphic forms by third parties. So, if you're looking for a unique and anonymous avatar, be sure to check out Identicons!