...
The Japanese Internet appears to have kept running remarkably well though one of the 6 end hosts monitored did go down for some time after the earthquake. This compares well with the impact of the Chilean earthquake on the hosts monitored in Chile in February 2010 in which both hosts monitored in Chile were not reachable following the earthquake. One was again reachable a few hours later, the other was not reachanle reachable until March 3rd 2010. The Japanese phone network did not fare so well as its Internet.
...