What is the biggest Ip range you can block?

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dwhs
Junior Member
Posts: 36
Joined: 30 Apr 2007, 10:17


The example shows (e.g. 192.168.254.0/24)

Is it possible to block say: 192. everything after that?

Like maybe: 192.0.0.0/8 which I think blocks 16 million IPs?
steviedweb
Junior Member
Posts: 1
Joined: 17 Jun 2019, 02:11


Yes, you can block /8 though I would recommend /16 unless you are really trying to block and entire country and know that the entire /8 range is exclusive to that country (ie 73.0.0.0/8 is registered to Comcast = USA)
dwhs
Junior Member
Posts: 36
Joined: 30 Apr 2007, 10:17


Awesome, thanks!
3 posts Page 1 of 1