LAN / WIFI AP with ips other than RFC1918

I need to know if is possible use LAN IPS others than 10/8,172.16/12,192.168/16. can i change the to something like 3.3.3/24?

I don’t see why not but I wouldn’t personally bother; if you’re that concerned about IPs, it’d be more efficient to setup static DHCP assignments/leases & approp. hostnames, IMO.

It’s not like you can’t ‘undo’ any configuration muckups if need you to ‘bail out’: