Need web-based access to WHOIS, reverse lookup, ping, tracert, spam database lookup, IP routiong info and more? Check this site out for several useful networking tools.

Making note of this for the ISP cached DNS lookup.. I've often wished I had something to point people at when explaining why their DNS settings are going to take awhile to fully take effect.

DNS Stuff: DNS tools, WHOIS, tracert, ping, and other network tools.