is this 188.8.131.52/12 a valid range of addresses?
Mask /12 255.240.0.0 11111111111100000000000000000000
Twelve 1s in the network portion of the address
Highest 11000001.10001111.11111111.11111111 184.108.40.206
CIDR block of 2^20=1048576 addresses (IPv4).
or maybe I cannot use /12 with 193.x.x.x (as it is class C)?
this is a class C address. so the default subnet mask is 255.255.255.0. that entails in turn that you only have 8 bits left for subnetting, while the first 24 bits are already reserved for defining the respective subnet mask for that class
so i dont think you can have a /12 subnet mask for an address in class C group.
Re: CIDR /12 addressing
12 years 8 months ago #11554