Plan your network with precision. Calculate IP subnet masks, CIDR ranges, and host capacities in seconds.
| IP Address | 00000000.00000000.00000000.00000000 |
| Subnet Mask | 00000000.00000000.00000000.00000000 |
Subnetting is the practice of dividing a network into two or more smaller networks. It increases routing efficiency, enhances the security of the network, and reduces the size of the broadcast domain.
| CIDR | Subnet Mask | Addresses |
|---|---|---|
| /24 | 255.255.255.0 | 256 (254 host) |
| /16 | 255.255.0.0 | 65,536 |
| /8 | 255.0.0.0 | 16,777,216 |
Classless Inter-Domain Routing (CIDR) is a method for allocating IP addresses and IP routing. It replaces the old Class A, B, C system.
In every subnet, the very first address is the Network Address and the very last is the Broadcast Address. Neither can be assigned to a host.
