Start with and split it into 4 equal networks, what is the third usable IP address of the 3rd subnet? how do you solve this?


1 Answer 1


Well let's see if i still remember this. /24 gives you 8 (32-24) bits to play around with. You need 4 networks, so it will take 2 bits to represent them (00 01 10 11) So your network part will be 26 (24+2) and four networks will be :   (last octet in binary 00'00 0000)  (last octet in binary 01'00 0000) (last octet in binary 10'00 0000) (last octet in binary 11'00 0000)

As you can see your third subnet is first IP represents subnet so it's not usable, first usable IP is, second is, and drumroll third

Did i just do your homework?

  • Yes you just did his homework, but at least you explained how...
    – Law29
    Nov 16, 2016 at 6:50
  • Thank you so much, I know how to solve this now, thank you!!!
    – Sebs.Alev
    Nov 16, 2016 at 22:11

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