Plex authentication server ip range

[rvansoest]

I’m using a IP whitelist on my firewall for Plex users to add another layer of security. Only the accounts and IP’s I allow can access the server. But I also need to add the Plex authentication servers. I composed a list using my firewall log. But the list is getting very long and I want to clean it up. Is there a IP list or range I can add for the Plex authentication servers?