Block IP Range, Block Single IP, from any incoming or outgoing from any Interface

I have a series of Single IP`s, and IP Ranges that i want OpenWRT to block any Communications to and from.

Please can someone provide an example of this:

i.e: I want to Block IP - Incoming and Outgoing - All Interfaces.
i.e. I want to Block IP Range - Incoming and Outgoing - All Interfaces

What would be the Firewall Rule?

Are Wildcards accepted in OpenWRT ?

i.e.: 196.74..

Ranges can be specified in CIDR notation (e.g. This means the size of the range must be a power of two. Odd sized ranges could use multiple such rules.