Acrobat standard DC: Firewall - IP address, hostname, port configuration

Good afternoon,

We use Adobe Acrobat Standard DC in our company and We have some issue with it. We have firewall at corporate network.
When I am opening some pdf file or opening empty application, approximately after 30 seconds, application is stuck/frozen.

We have the last update/version of application.
I think that, some communication between our firewall and servers of adobe company are blocked. I would need create whitelist of IP addresses, hostnames, ports of adobe servers. Could you send me please a list of that?
(IP addresses or hostnames, ports)


Thank You Very Much for your help,

Yours sincerely,

Lukáš Nový