NetworkIPv4 Range Expanderclient-sideEnter the first and last address of a range and get the smallest CIDR block that covers it.IPv4 Address ConverterSee an IPv4 address written as decimal, hexadecimal, binary, and its IPv6-mapped form.IPv4 Subnet CalculatorBreak an IPv4 CIDR block down into its network and broadcast address, usable host range, mask, and size.