Internet Reliability, from Addresses to Outages

Heidemann, John
USC/Information Sciences Institute


John Heidemann 2018. Internet Reliability, from Addresses to Outages. Talk at MIT CSAIL. [PDF]


The Internet is central to our lives, but we know astoundingly little about it. How big is the Internet? How reliable? How is it evolving over months? How does it change over the course of a day? Since 2006, we have been studying the public face of the Internet to answer these questions. We take regular censuses, probing the entire IPv4 Internet address space. For nearly two years we have been observing Internet reliability through active probing with Trinocular outage detection, showing that the Internet reflects natural disasters like Hurricanes from Sandy to Harvey and Maria. Additional analysis of this data has shown that the Internet “sleeps”: we can see that some areas have more active IP addresses during the day. Our data provides a unique perspective on the reliability and relative maturity of the Internet in different countries. The talk will explore these relationships through the science behind these ideas.


  author = {Heidemann, John},
  title = {Internet Reliability, from Addresses to Outages},
  howpublished = {Talk at MIT CSAIL},
  month = feb,
  year = {2018},
  sortdate = {2018-02-06},
  project = {ant, nocredit, lacanic, retrofuturebridge, duoi},
  jsubject = {routing},
  jlocation = {johnh: pafile},
  keywords = {internet outages, outage detection, invited talks},
  url = {},
  pdfurl = {},
  myorganization = {USC/Information Sciences Institute},
  copyrightholder = {authors}