Hubble
I stumbled across Hubble this morning. This Hubble has nothing to do with astonomy. Basically, Hubble is a tool that scans the net doing trace routes on all public addresses. It keeps track of which addresses were available and which ones were advertised as available but were unreachable. Below is the complete description from the site.
Enjoy.
Having trouble accessing a favorite Web site? Perhaps the site was taken offline, or the computer hosting it is down for maintenance. However, the cause could be something more mysterious. At any given moment, a portion of Internet traffic ends up being routed into information “black holes.” These are situations where advertised paths exist to the destination, but messages – a request to visit a Web site, an outgoing e-mail – get lost along the way.
Hubble is a system that operates continuously to find persistent Internet black holes as they occur. Hubble has operated continuously since September 17, 2007. During that time, it identified 882,929 black holes and reachability problems. In the most recent quarter-hourly round, completed at 09:31 PDT, 04/09/2008, Hubble issued 95,661 traceroutes to 3,531 prefixes it identified as likely to be experiencing problems (of 78,772 total prefixes monitored by the system). Of these, it found 1,361 prefixes to be unreachable from all its vantage points and 1,380 to be reachable from some vantage points and not others. Below the following map, you’ll find instructions on interpreting and navigating this page. You can go here for a more detailed description of the Hubble academic research project and its goals. Below, you can look up Hubble’s current view of the reachability of the address of your choice. Feel free to send suggestions and other feedback to hubble-support.
Check it out if you are having trouble while cruising the ‘net. I added the link to my links list and here it is again: http://hubble.cs.washington.edu
