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IP Class Calculator
IP address classification and subnet calculator!
Enter an IP address or use CIDR notation.
What you need to know about IP address classes.
Class A: 1.0.0.0 - 126.255.255.255 (Large networks)
Class B: 128.0.0.0 - 191.255.255.255 (Medium-sized networks)
Class C: 192.0.0.0 - 223.255.255.255 (Small networks)
Class D: 224.0.0.0 - 239.255.255.255 (Multicast)
Class E: 240.0.0.0 - 255.255.255.255 (Experimental)
Class A: 10.0.0.0 - 10.255.255.255
Class B: 172.16.0.0 - 172.31.255.255
Class C: 192.168.0.0 - 192.168.255.255
CIDR (Classless Inter-Domain Routing) is a method of IP addressing. Notations such as /24 specify the subnet mask: /24 means 256 IP addresses and /16 means 65,536 IP addresses.
Detects Class A, B, C, D and E.
Network and broadcast addresses, plus host count.
The binary form of the IP address.
