new tech report “A Preliminary Analysis of Network Outages During Hurricane Sandy”

We just released a new technical report “A Preliminary Analysis of Network Outages During Hurricane Sandy”, available at and at

From the abstract:

This document describes our analysis of Internet outages during the October 2012 Hurricane Sandy. We assess network reliability by pinging a sample of networks and observing those that respond and then stop responding. While there are always occasional network outages, we see that the outage rate in U.S. networks doubled when the hurricane made landfall, then took about four days to recover. We confirm that this increase was due to outages in New York and New Jersey.

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