CIDR Calculator

Netmask

255.255.255.0

Broadcast Address

192.168.1.255

First Usable IP

192.168.1.1

Last Usable IP

192.168.1.254

Available IPs

254

Network Type

Class C

Interactive Binary Calculator

IP Address (Binary)

11000000

10101000

00000001

00000000

Netmask (Binary)

11111111

00000000

Classless Inter-Domain Routing (or CIDR), is a method for allocating IP addresses for IP routing first introduced in 1993 to replace the previous classful network addressing architecture on the Internet.