Class C Subnetting
Example 6

Which subnet is host 210.25.200.165 /30 in?

We use a 30-bit subnet mask for subnets that only need two hosts.  A point-to-point connection is ideal for this.

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Leave A Reply (2 comments So Far)


  1. eackley
    308 days ago

    To find the subnet, I use this process:
    Take the value of the octet in question, and divide by the valid subnet number: 165/4=41.25
    Multiply the subnet number by the integer value of the above computation: 4*41=164
    164 is the octet of the subnet that the address in question belongs to: 210.25.200.164


    • paulwbrowning
      303 days ago

      Okay but will this work in exams with no calculator or job interviews?