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syria4-r

Tracing the Syrian Blackout

June 10, 2011 • Updated Monday morning to include detailed Syrian network map, and include...

ipv6day-f

World IPv6 Day

June 8, 2011 • Today is World IPv6 Day, a day when major content providers have agreed to furnish service...

syria3-r

Syrian Internet Shutdown

June 3, 2011 • (Updates on the restoration of Syria’s internet at the bottom of this...

qwavvis-r

Qwavvis: The Battle for Second

April 29, 2011 • About two weeks ago, Level 3 announced plans to acquire Global Crossing and we...

level-r

Level Crossing

April 14, 2011 • On Monday, 11 April 2011, Level 3 announced they had entered a definitive...

japanquake-r

Japan Quake

March 11, 2011 • Today’s 8.9 magnitude earthquake in Japan has had surprisingly limited...

egypt-r

What Libya Learned from Egypt

March 5, 2011 • Libya’s nationwide Internet blackout is entering its second full day....

libya5-r

Libyan Disconnect

February 18, 2011 •   Final updates on this thread added at the bottom. New analysis here....

algeria-r

Watching Algeria

February 12, 2011 • Early reports from Algeria tonight suggested that another Internet takedown may...

egypt-f

Egypt Returns To The Internet

February 2, 2011 • Latest updates on Wednesday’s restoration of Internet service in Egypt can be found at...

internbethole-r

A Hole in the Internet

February 1, 2011 • Even before their communications blackout, Egypt really was a small part of the...

egypt5-r

Egypt’s Net on Life Support

January 31, 2011 • As of approximately 20:46 UTC, four hours after this blog was first published,...

egypt6-h

Egypt Leaves the Internet

January 27, 2011 • Thanks to all for great comments and questions. Please see below for...

bakersdozen-r

A Baker’s Dozen, 2010 Edition

January 10, 2011 • It’s become an annual tradition at Renesys to provide a year-end review...

wikileaks-v

WikiLeaks: Moving Target

December 7, 2010 • This has been an exciting month for those of us who study the Internet’s...

dns-r

DNS: When Governments Lie (2)

December 1, 2010 • Last week, we looked at the problem of incorrect DNS answers emanating from...

dns-r

DNS: When Governments Lie (1)

November 23, 2010 • There’s been sudden interest recently in a Chinese route hijacking...