robtex is advertised as an online "swiss army knife" it has many search tools and is useful for investigation of ip addresses and domain names but also offers much more I use it a lot when I am checking through firewall logs at who is trying to get access to my computers http://www.robtex.com/ robtex supersearch (this may not work in firefox - check it out) http://www.robtex.com/search/frameit.htm
