Wow ! I would never have guessed icanhazip.com got such an enormous amount of requests per day ! I wonder how this site/service achieved such a notoriety ? I am really not trying to diminish the author work but since it is something pretty simple to build and I know there are lots of others alternative I wonder what makes people choose this one over an other like let's say :
http://ipinfo.io/ip https://test-ipv6.com/ checkip.amazon.com checkip.dyndns.com http://whatismyip.akamai.com/ ifconfig.me ip.zfx.fr // I even have mine ^^ etc...