Subnet Calculator
Calculate IPv4 networks, host ranges, and subnet masks.
Query public DNS records through Google Public DNS.
Public domain name: example.com Record type: A
The domain you enter is sent to Google Public DNS. This is a single-resolver lookup, not a propagation check. Private hostnames should not be entered.
Calculate IPv4 networks, host ranges, and subnet masks.
Query public PTR records for an IPv4 address.
Check IPv6 address syntax, including compressed notation.
Your result will appear here.
Enter your input, then run the tool.The domain you enter is sent to Google Public DNS. This is a single-resolver lookup, not a propagation check. Private hostnames should not be entered.