Oauth.battle.net 403

As of yesterday, the host for my web app is getting a 403 Forbidden response trying to connect to hxxps://oauth.battle.net - this isn’t super great since nobody can log in now. Is there any actual way to get support on this?

I’m having the same issues. If I use localhost as the redirect url, it works, but real url doesn’t work.
edit - Blizz banned quite a few cloud IPs. So try a different IP.

Same problem here, this is blocking lots of users from logging in. I can’t realistically change our source IP. Why are Blizzard blocking cloud IPs? Token requests will almost always be coming from a cloud hosting IP.