This is ordinary example for Class B Example:
Network id: 18.104.22.168
But in subnet are the classes less IP. So for the following IP It is not for class A, B, C.
Network id: 22.214.171.124
Host id: 0.0.255.255
Subnet mask: 255.255.240.0
If you doubt see the post: how to calculate the subnet mask value