Trace Explorer aggregates traceroutes to many popular websites and makes them searchable, allowing you to discover which web sites are hosted near each other, at a particular ISP, or behind a specific router.

• By default, you’ll only see hosts or routers that exactly match your query and anything beyond them. If you want to see what else is near by, try clicking on the IP address of the router just before your destination.
• To compare the paths to multiple destinations, just type in both, as in [perl.org cpan.org].
• To remove something from the results, prefix it with a minus, as in [perl.org -dreamhost.com], which will find *.perl.org sites that are not on Dreamhost.
• For a quick trace of any page you are viewing, bookmark this link -> Trace Explorer <- by right-clicking on the link and selecting “Add bookmark for link” or dragging it to your browser toolbar.
• Only around 1000 results will be returned. If your query is very broad, you may get no results or will see what exactly matches your query but not very far beyond that. If you run into this, try to be more specific.
• This tool has already collected traces for many popular web sites. If you type in something that it doesn’t know about, it will try to look it up and trace to it as long as the hostname begins with “www.”.

http://trace.die.net/

Some of the very interesting demonstrations:

http://trace.die.net/search/?q=whitehouse.gov

http://trace.die.net/search/?q=microsoft.com

http://trace.die.net/search/?q=ubuntu.com

pavs