Firewalls, for example. We have huge files containing risk levels for various IP addresses. Most of it is automated, but sometimes we have to tweak something

Firewalls, for example. We have huge files containing risk levels for various IP addresses. Most of it is automated, but sometimes we have to tweak something manually. These aren't IP addresses that we control, so DNS isn't helpful. Often we're dealing with ranges as well, for which DNS is also unhelpful.