Why are Class C IP addresses preferred in private networks

ip addressnetworking

Why are Class C IP addresses preferred over A and B in private networks?

My possible answer is "In class C, the number of host IP address available in the network is less than class A or B thus making it easier for DHCP to manage." But I'd like to double confirm.

Best Answer

I don't think they're preferred. I've seen plenty of networks using RFC1918 class A, B, and C addressing schemes. Use the class that suits your needs:

  1. How many subnets do you need?

  2. How many hosts per subnet do you need?

  3. What routing needs do you have to route traffic between subnets?

  4. Do you anticipate having a large number of hosts per subnet and want to reduce the size of your broadcast domains?

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