Outlook for MAC delete email by ip octects

Good morning: I'm sure like many of you, I'm sick and tired of getting junk email in my Outlook for Mac email. The Email rules that I have created for EXCHANGE, IMAPI and POP rules do not work reliably. What I need to do is block emails coming from a domains IP address using its first two octets ie 128.245. This seems like a no-brainer, it seems like Microsoft and Apple could've come up with a simple way to do this. Or are they just in League with the junk emailers of the world?

In closing, much gratitude for any in all input!