“At around 18:45 UTC OpenDNS resolvers saw a significant drop in traffic from Syria. On closer inspection it seems Syria has largely disappeared from the Internet.“
Here’s the illustration from Umbrella Labs:
While the cause is unclear, internet outages in Syria have come at tactically significant times for the Assad regime in the past. Last November 92 percent of web traffic went offline as the regime was rumored to be mixing chemical weapon components, and 78 percent of traffic went offline in January when Assad gave a rare public address.
Today’s outage makes it even harder to know what exactly is going on in Syria because much of the outreach and organization by rebel forces relied on the internet, such as Youtube videos.