Wildcard Bits explained

Hi Donald,

You can do some funny things with wildcard masks, you can even match networks that are not contiguous. Something to keep in mind is that your first network has to be an even number. Example #1:

148 – 10010100
149 – 10010101

In this case the first 7 bits are the same so you can use wildcard 00000001

Example #2:

149 - 10010101
150 - 10010110

Only the first 6 bits are the same so the wildcard would be 00000011. The problem of this wildcard is that it will match 4 networks:

148 - 10010100
149 - 10010101
150 - 10010110
151 - 10010111

These 4 networks have the same first 6 bits.

Here you can read some more funky wildcard examples:

https://networklessons.com/security/create-complex-wildcard-masks/

And if want any more examples just let me know ok?

Rene