DNS Looking Glass

Multi Server DNS Lookup

This tool will pick DNS servers located in different countries to lookup a hostname. Servers labeled as "Global" are,, It is normal for some DNS servers to return no responses (we use a fairly short timeout). For each country, we will use three different DNS servers.

This feature can also be used via our API: https://isc.sans.edu/api/dnslookup/[hostname].

Feedback welcome. Please use the bug reporting on the left or our contact form.