This is a useful search as there is speculation about Google checking the other domains that exist on an ip. This search is done in MSN typing ip:ip address
Nice, here are some other tools : http://www.seoegghead.com/tools/what-is-hosted-on-that-ip.php http://www.seologs.com/ip-domains.html
If you're not doing anything shady, then there isn't anything to worry about. Many shared hosts have thousands of sites on the same ip. If you're an evil spammer....different ip's, different hosts, different whois, etc. Interlinking to sites on the same ip is a good spam signal. Good find on the msn search though, it's one I have never seen.
i was using Domain tools it was free for long time and about a month ago they made it paid thanks for the tip
There is a theory that Google checks the sites that exist on the an ip when ranking a site. Just check that there are no dodgy sites on the ip which may affect your rank.