DNS Lookup

The DNS is a critical resource for every network application (mail, web, ...), and so it is quite important to ensure that a zone or domain name is correctly configured.The DNS has been designed to be robust to errors, as a result you can pervert it so to have a working DNS even if you misconfigured it. But in such a case, a single additional error can result in your zone completely disappearing, and this additional error is not necessarily your fault! So if you don't want to disapper from the Internet with emails and web servers due to, for example, one of the nameserver you use but don't manage, don't mess your initial configuration and use this tool to check your domain!