The earthquake occurred on Saturday at 11:56 April 25th, 2015 NPT or 6:11 UTC (see http://en.wikipedia.org/wiki/April_2015_Nepal_earthquake) N.b. NPT is UTC + 5:45.
Internet service was disrupted after the earthquake hit near the capital city of Kathmandu on Saturday and cloud services provider Akamai said its traffic to the country saw a steep decline just after 6:00 UTC.
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Nepal Telecom survived the earthquake while smaller Internet service providers experienced outages, Internet performance monitoring company Dyn said. It had earlier reported that the earthquake had rattled the Internet in the country. From http://www.itworld.com/article/2914975/internet-steady-in-nepal-after-earthquake-but-lastmile-connectivity-an-issue.html
Impact on NREN Web site access
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The event occurred at 0611UTC, and for 2.5 hours(!) the connectivity from SLAC to NNREN was maintained quite well, it seems.
I agree it is very interesting/curious that the connectivity appeared to continue working for 2.5 hours, and then died. One would need to talk to the net and host admins. There are many possibilities e.g. maybe the network continued to work but a UPS on the host ran out of battery power, or the backup generator ran out of fuel, or people deliberately shut down power.
It is interesting that the connectivity continued for an hour or so after the shock wave. Caltech points out that this could be important for projects measuring the impact of the initial shockwave.
There is a second gap in the www.most.gov.np on 25 April from 1309-1939UTC, for which a similar question arises about the gap source.
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