[Infowarrior] - Hubble: Monitoring Internet Reachability in Real-Time

[Richard Forno]

http://hubble.cs.washington.edu/

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 883,163 black holes and
reachability problems. In the most recent quarter-hourly round, completed at
11:40 PDT, 04/09/2008, Hubble issued 87,413 traceroutes to 2,791 prefixes it
identified as likely to be experiencing problems (of 78,772 total prefixes
monitored by the system). Of these, it found 1,264 prefixes to be
unreachable from all its vantage points and 1,133 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.