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Doug Madory

Director of Internet Analysis

Doug Madory is a Director of Internet Analysis at Oracle Dyn Global Business Unit where he works on Internet infrastructure analysis projects. Doug has a special interest in mapping the logical Internet to the physical lines that connect it together, with a focus on submarine cables. He holds computer engineering degrees from the University of Virginia and Dartmouth College.

Recent Posts by Doug Madory

Introducing the Internet Intelligence Map

Today, we are proud to announce a new website we're calling the Internet Intelligence Map. This free site will help to democratize Internet analysis by exposing...

BGP Hijack of Amazon DNS to Steal Crypto Currency

Yesterday morning we posted a tweet (below) that Amazon’s authoritative DNS service had been impacted by a routing (BGP) hijack.  Little did we know this was...

China Activates Historic Himalayan Link To Nepal

On 10 January 2018, China Telecom activated a long-awaited terrestrial link to the landlocked country of Nepal.  The new fiber optic connection, which...

Recent Russian Routing Leak was Largely Preventable

Last week, the IP address space belonging to several high-profile companies, including Google, Facebook and Apple, was briefly announced out of Russia, as was fi...

Puerto Rico's Slow Internet Recovery

On 20 September 2017, Hurricane Maria made landfall in Puerto Rico.  Two and a half months later, the island is still recovering from the resulting devastation. ...

Widespread Impact Caused by Level 3 BGP Route Leak

For a little more than 90 minutes yesterday, internet service for millions of users in the U.S. and around the world slowed to a crawl.  Was this widespread...

North Korea Gets New Internet Link via Russia

This past weekend, North Korea expert Martyn Williams and I spotted the activation of a new internet path out of North Korea.  At 09:07:51 UTC on 1 October...

Large BGP Leak by Google Disrupts Internet in Japan

At 03:22 UTC on Friday, 25 August 2017, the internet experienced the effects of another massive BGP routing leak.  This time it was Google who leaked over...

Ukraine Leaks Russian Social Media Ban

Another development in the long-running conflict between Ukraine and Russia occurred in May of this year when Ukrainian President Petro Poroshenko enacted a...