If your organization limits access to specific web entities, access to Expert sites can be granted by allowing IP addresses and domains. While Expert cannot provide IP addresses because they are subject to change without notice, the following domains are used by Expert as of January 14th, 2019:
a.mtstatic.comfiles.mtstatic.comcdn.mindtouch.usajax.mindtouch.com fonts.googleapis.comfonts.gstatic.comd37gvrvc0wt4s1.cloudfront.net<your Expert domain>ldap.mindtouch.us (only necessary if you are using LDAP authentication)