Subnet Calculator
Calculate IPv4 networks, host ranges, and subnet masks.
Inspect the scheme, hostname, path, and parameters of a URL.
Your result will appear here.
Enter your input, then run the tool.URL: https://example.com:8443/tools?q=json#results
Use the labeled units and valid url. The Example button supplies a reproducible starting input.
Calculate IPv4 networks, host ranges, and subnet masks.
Query public PTR records for an IPv4 address.
Check IPv6 address syntax, including compressed notation.