retrohack.com
subnet-wildcard values
CIDR SubnetMask WildcardMask HexSubNetMas 32 255.255.255.255 0.0.0.0 FF.FF.FF.FF 31 255.255.255.254 0.0.0.1 FF.FF.FF.FE 30 255.255.255.252 0.0.0.3 FF.FF.FF.FC 29 255.255.255.248 0.0.0…