Jump to content

Can network id's be 0 or 255?


ala888

Recommended Posts

Its common knowledge that a host portion of an IP address cannot be 0 or 255

How do you figure? Each of the 4 numbers of an IPv4 address is an 8-bit number, meaning there are 256 possible values, meaning that the possible values are 0 through 255 inclusive.
Link to comment
Share on other sites

A network ID is not an IP address. The network ID will end in .0, but an IP address can also end in .0. It's also perfectly fine to have 0 or 255 as the second or third octet. IPs with the first octet 0 or 255 are reserved, but they are still valid IPs.

Link to comment
Share on other sites

  • 2 weeks later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...