Subnet Calculator
Calculate network details, IP ranges, and subnet masks effortlessly. essential for network planning.
Understanding Subnets
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. Learn more about CIDR and subnetting in our guide.
CIDR Notation
Classless Inter-Domain Routing (CIDR) is a method for allocating IP addresses and IP routing. It replaces the older classful network design.
Network & Broadcast
The first IP address in a subnet is the Network Address, and the last is the Broadcast Address. These cannot be assigned to hosts.
Subnet Mask
A 32-bit number that masks an IP address, and divides the IP address into network address and host address.