whenever you want to know what is your external IP then you to open your router administrator panel or you have to visit some sites like http://whatismyip.com or something like that but that’s annoying but not more hassle for knowing you IP address just use http://google.com

see how it works

just type ”  IP  ”

NOTE: this is not available for google.co.in yet so you have to choose google.com from main google page