Reverse DNS the World - What do you learn? The how and what

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Presented at bsideswinnipeg 2017 by

Rob Keizer

Recent years have seen the scanning the entire IPv4 Internet become more and more commonplace. Rob has gone and compiled a database of reverse DNS records for every IP address. What information can be extracted from them? Perhaps secure-admin.someprovider.com might not have been the smartest name to use. This presentation will go over how he was able to reverse DNS the entire world, as well as some examples of interesting entries. Rob is an active player in Winnipeg’s tech scene, lending his talents to a variety of entrepreneurial and startup ventures. He is currently Founder and CEO at Pegboard Hosting and a Founding Director of Coldhak. His previous community involvement has included serving on boards of SkullSpace and the Manitoba Unix User Group (MUUG). Previous titles include developer, systems admin, CTO, etc.