CIDR IP Ranges Calculator
The most interesting aspect of TCP / IP is the subnet mask.
Subnet masks point out to IP which bits of the 32-bit IP address refer to the network.
It is a parameter included with every IP address that highlights the network portion.
The CIDR abbreviation stands for Classless Inter-Domain Routing and is very similar to a subnet mask. For example, a subnet mask of 255.255.255.0 tells IP that 24 bits determine the network portion of the address, so CIDR simply uses the notation of /24.
Calculate CIDR block, subnet mask for IP range
Within our CIDR calculator, which also calculates the subnet mask, you can get a CIDR as well as a subnet mask preview for the entered IP address ranges. Of course, the second field must have a larger range than the first. Here are a few examples sorted by classes:
- class A for very large networks 220.127.116.11 - 18.104.22.168
- class B for medium network 22.214.171.124 - 126.96.36.199
- class C for small network 188.8.131.52 - 184.108.40.206
- class D for multicast 220.127.116.11 - 18.104.22.168
- class E for experimental purpouses 240.0.0.0 - 255.255.255.255.