Computer networks are built on math. Every time you connect a device to the internet, you are assigned an IP address. But that address isn't random—it belongs to a specific block of addresses called a Subnet. Managing these blocks requires understanding a system called CIDR (Classless Inter-Domain Routing). To the untrained eye, 192.168.1.0/24 looks like nonsense. But to a network engineer, that little /24 explains everything: exactly how many devices can connect, where the network starts, where it ends, and which mask to use. A CIDR Calculator is the tool that cracks this code. It instantly translates confusing CIDR notation into usable IP ranges, or converts a range of IPs into the correct CIDR format. Whether you are configuring an AWS VPC, setting up a home router, or blocking a range of spam IPs on your firewall, this tool is your map to the network. What Is a CIDR Calculator? A CIDR Calculator is a utility that performs complex binary math to manage IP address allocation. I...