CIDR Calculator

Netmask

255.192.0.0

Broadcast Address

100.127.255.255

First Usable IP

100.64.0.1

Last Usable IP

100.127.255.254

Available IPs

4,194,302

Network Type

Class A (Carrier Grade NAT)

Interactive Binary Calculator

IP Address (Binary)

01100100

01000000

00000000

Netmask (Binary)

11111111

11000000

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.