CIDR Calculator
What is CIDR?
🌱 New to this?Try our example of a typical home network: 192.168.1.0/24
🎯 Advanced user?Enable advanced mode for binary and detailed analysis
Common CIDR Examples
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Private Network (Class C)
192.168.1.0/24Common home/small office network range
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Private Network (Class B)
172.16.0.0/16Medium-sized business network range
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Private Network (Class A)
10.0.0.0/8Large enterprise network range
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Understanding CIDR Notation
What is CIDR?
CIDR (Classless Inter-Domain Routing) is a method for allocating IP addresses and routing. It replaces the older system of IP address classes with a more flexible notation.
CIDR Format
A CIDR address looks like: 192.168.1.0/24
The number after the slash represents the network prefix length.
Common Prefix Lengths
/24- 256 addresses (typical home network)/16- 65,536 addresses (medium network)/8- 16,777,216 addresses (large network)