UE Custom Licensing

To install UE-4 licence,we need to get approval from our internal IT Security team about port openings and URLs that are to be connected for installing Unreal Game Engine.We found in the documentation need to open certain ports and provide access to URL (mentioned below). But when we tried to connect URLs through web browser, none of the links is working.Our,IT security team requires reasons for accessing these URLs specifically.Can anyone help me out in solving this issue?
Detials for the port opening and urls that we found in documentation are as follows:
Ports that are to be opened - 6666, 80, 443(https) and 5222.
Epic subdomain url’s:

https://launcherwaitingroom-public-service-prod06.ol.epicgames.com 
https://account-public-service-prod03.ol.epicgames.com 
https://launcher-public-service-prod06.ol.epicgames.com 
https://catalog-public-service-prod06.ol.epicgames.com 
https://entitlement-public-service-prod08.ol.epicgames.com 
https://priceengine-public-service-ecomprod01.ol.epicgames.com 
https://lightswitch-public-service-prod06.ol.epicgames.com 
https://eulatracking-public-service-prod06.ol.epicgames.com 
https://friends-public-service-prod06.ol.epicgames.com