Networking Tools
Calculators and lookups for IPv4/IPv6 addressing, subnetting, CIDR notation and port references.
- CIDR CalculatorCalculate network address, broadcast address, usable host range, subnet mask and host count from any IPv4 CIDR block. Runs entirely in your browser.
- Subnet Mask ConverterConvert between CIDR prefix length, dotted-decimal subnet mask and wildcard mask, with the binary representation of each.
- IP Address ConverterConvert an IPv4 address between dotted decimal, binary, hexadecimal and 32-bit integer notation, and see how each octet maps to bits.