DNS server recursion check

What is this?

This online tool can be used to verify whether a DNS server recursively resolves FQDNs for interned based clients. 

The tool was developped after writing our blog in relation to DNS Amplification DDoS attacks so that interested readers can perform a basic check of their own DNS servers.

Feedback is more than welcome, please use the form provided in the contact us section of the website.

How to use

This tool is quite simply to use: Simply enter the IP address of the DNS server you'd like to validate. At this stage, no hostnames are accepted, sorry.

The result of the check will be displayed within a few seconds.