As per [[User:echarlie|echarlie]], "check rdns. if there isn't an entry, and it's in ece's allocated block, we can use it."

Private IPv4 addresses:

We also use private addresses for things like NAS. This isn't 100% figured out yet, but we will probably do something like use 10.0.0.0-100 as static IPs and run DHCP on 10.0.0.101+.

IPv6 addresses:

See [[Infrastructure_2017|Infrastructure 2017]].