Here is a kewl site that has a bunch of Free Online Network Tools. There are utilitys like WHOIS, PING, and TraceRoute, as well as, some other useful Net applications.
Check it out here.
Welcome to the Skeleton Crew! A collection of odd trinkets of Technical Know How, Gaming Goodies, Weird Science, Carnal Knowledge and Various Resources, that I have stumbled upon in my journeys through cyberspace.