ip-адреса к которым необходимо предоставить доступ Creative Cloud

I do not know, and I suppose it is not the case, that Adobe is committed using only certain ip-addresses for certain services. I suppose you need to find a different way to configure your firewall/proxy.

I would contact Adobe directly via chat or phone on this issue. But I doubt that this is a question common enough that the help-desk can answer. But may be this can be escalated to the right person at Adobe.