I've pointed 3 domains (from different provider) to my website 2 of them shows some Chinese character instead of some fonts (mfn-icons & revicons) but the main domain is working fine!
Ok, so everything is clear now. The problem is related with CORS library which is not enabled on your server what you can see on http://pasteboard.co/2FedVpjY.png
Comments
please send us url to site where icons does not work and we'll have a look on it.
More details about this library you can read on http://enable-cors.org/server.html
Thanks!