CIDR Calculator
Netmask
255.0.0.0
Broadcast Address
10.255.255.255
First Usable IP
10.0.0.1
Last Usable IP
10.255.255.254
Available IPs
16,777,214
Network Type
Class A
Interactive Binary Calculator
IP Address (Binary)
00001010
·00000000
·00000000
·00000000
Netmask (Binary)
11111111
·00000000
·00000000
·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.