When I noticed a store’s webserver was unreachable, I decided to find out why. With a little sleuthing I found that its nameservers were not resolving.
Normally when this happens there’s no trace of the company left on the Internet, but The Google took me to the robtex DNS tool. Thanks to this site, I was able to find the missing nameservers’ IP addresses and verify that these servers were indeed offline.
I consider it poor system administration to host your domain nameservers entirely in your own namespace for just this reason. If you make a mistake in a zone with your own nameserver, your whole foo.com site becomes invisible to the Internet.
I hope this major store gets itself back on the web soon!