IP Lookup

Map a host to an IP, reverse DNS, and a public geo hint.

IP or hostname

Calculated Result

Enter a target and run

Formula: Forward/reverse DNS + ipwho.is geo

About this calculator

Accepts an IP or hostname. Geo data comes from the public ipwho.is service and can be wrong for anycast or VPN exits.

FormulaForward/reverse DNS + public IP geo (ipwho.is)

dns.resolve / dns.reverse + GET ipwho.is/{ip}.

Resolve A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA.

Registrar, status, dates, and nameservers from RDAP.

DNS and HTML download timings (not Lighthouse).

Check if a domain looks free via public RDAP.