PrismKitNetworkIPv4 Range ExpanderIPv4 Range ExpanderRuns in your browserLocalCopy linkMarkdownEnter the first and last address of a range and get the smallest CIDR block that covers it.IPv4 Subnet CalculatorBreak an IPv4 CIDR block down into its network and broadcast address, usable host range, mask, and size.IPv6 Address ConverterRewrite any IPv6 address in compressed, expanded, binary, hex, decimal and reverse-DNS form, and see what kind of address it is.