Comprehensive IP address calculation and subnet planning tool
Based on ipcalc by Krischan Jodies (http://jodies.de/ipcalc)
Calculate network information for an IP address and netmask
Basic Calculator: Calculate network information from an IP address and netmask. Shows network, broadcast, host range, and special network types.
Subnet / Supernet: Generate subnets when increasing the prefix (e.g., /24 to /26) or calculate the supernet when decreasing the prefix (e.g., /24 to /22).
Deaggregator: Convert an IP address range into the optimal set of CIDR blocks. Useful for firewall rules and routing configurations.
Credits: This tool is based on the excellent ipcalc by Krischan Jodies (2000-2021).