A method for allocating IP addresses and routing Internet Protocol packets. It uses a compact representation of IP addresses and prefixes, allowing for more efficient routing of IP packets. In CIDR notation, an IP address is represented as a string of numbers separated by a slash (/) followed by the prefix length, which specifies the number of bits used for the network address and the host address.
Examples:
- 192.168.0.0/24 – This notation represents a range of 256 IP addresses starting from 192.168.0.0 to 192.168.0.255. The “/24” represents the number of bits used for the network address, in this case 24 bits.
- 10.0.0.0/16 – This notation represents a range of 65,536 IP addresses starting from 10.0.0.0 to 10.0.255.255. The “/16” represents the number of bits used for the network address, in this case 16 bits.
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