SEP 14 IP addresses

Environment:  Windows 7 PRO SP1 64-bit, SEP 14 MP2

We are looking for information.

There is Symantec knowledge base article https://support.symantec.com/en_US/article.TECH162286.html that specifies all of the URLs that SEP 14 connects to.  We are researching the best way to allow these URLs to be accessed through our gateway firewall without inteference.   It appears that the most straightforward way is to exclude the URLs by IP, rather than FQDN.

Does anyone know if the IPs for the 20+ URLs named in TECH16226 remain constant, never changing?  

We are aware of  the warning in https://support.symantec.com/en_US/article.TECH102059.html for the LiveUpdate server IPs.   They do not remain constant.

We need to know about the other URLs' IPs.

Thanks