These Network & Administrator Tools at Manytools.org are made available online because I need to use these every now & then myself. Hope they might come in handy to other webdevelopers or sysadmins for troubleshooting & configuring their domains & servers. If you'd require any additions, please let me know!
What is my IP address?
Ping a server and see the results.
Trace the path to a server
Query a Domain Name Server and display the results.