IP Subnet Notation

subnet ip-address notation

That's Classless Inter-Doman Routing notation. The /24 means that the routing prefix of the subnet is 24 bits long, which means there's ony 8 bits left for the subnet itself, i.e. 123.218.44.0 to 123.218.44.255


/24 means the mask is 255.255.255.0

And the other posters are correct about /24 being CIDR.


The "0/24" is CIDR notation. It's a standard way to represent the subnet mask.


/24 represents 255.255.255.0 which is the default subnet mask of Class C ip address which has a number of 16777216 subnets and 254 hosts

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