@ComcastJosh posting here in reference to https://forums.xfinity.com/t5/Xfinity-xFi/xFi-Advanced-Security-is-blocking-my-company-s-website/m-p... as I couldn't DM you
It is my understanding that ComcastJosh is no longer on that team.
Try contacting the reps on this team;
Comcast Customer Security Assurance.
Business Hours: 6:00am - 2:00am EST, 7 days a week
After 1.5 hours and 6-8 various agents and transfers I got nowhere.
I even have xfinity so I could get to the level 2 support agents and they either had no clue what I was asking, or tried to disable my xFi Advanced Security.