I am using webpagetest.org
to test my site's speed. I've noticed in the Waterfall View that there are files loading on my site which do not physically exist on the server, even though the URLs point to the root folder of my site.
For example:
http://www.offers.example.com/favicon.ico
http://www.offers.example.com/cdn-cgi/pe/bag2?r[]=http%3A%2F%2Fwww.offers.example.com%2Fwp-includes%2Fjs%2Fwp-emoji-release.min.js%3Fver%3D4.6.1
How is this possible?
example.com
as the domain)?