Add-IPAllowListEntry from a list of IP addresses??

Hello!

I have compiled a list of friendly IP addresses I'd like to add to my Edge Transport servers content filters.  The list is 180+ entries in size and I really am not looking forward to entering these by hand.  I tried something like "Add-IPAllowListEntry -IPAddress < C:\temp\list.txt, but PS rejected that with an error "The '<' operator is reserved for future use."

Has anyone found another way to bulk enter these IP addresses?

Thanks to all for looking!

Gregg