DNS Stuff : For all online lookups
As some of you know I was out of reach for two days. A mess up with my MX records forced the mails to be lost in the woods of Internet. Only when few friends called me to ask why i didn't reply; I realized that there is something wrong. My first step was to correct the MX records at my domain name registrar. Then check it from a third party tool to verify everything was OK. There are many such tools available on the net for such look up. I found called DNS Stuff
The DNS stuff gives almost all the services in one clutter free UI. Services like email id lookup; dns lookup; trace route etc. They all are very useful when you do system admin yourself.