Is there a way to list all IP addresses that use ConfigServer Services?

Is there a way to list all IP addresses that use ConfigServer Services? I have “85.10.199.177” in my csf.allow and csf.ignore files so that CSF+LFD can roll out updates. I had to add an empty csf.deny file and restrat scf+lfd in order to get the email from the registration (as a helpdesk). Is there a possibility to add all IPs within a single range? Thanks!