[outages] ntp.org DNS lookups failing

[Stephane Bortzmeyer]

On Wed, Jan 18, 2017 at 02:15:32PM -0600,
 Douglas K. Rand via Outages <outages at outages.org> wrote 
 a message of 10 lines which said:

> All of our DNS queries in the ntp.org zone seem to be failing.

Works for me but, indeed, fails from several places.

Investigation in progress:

https://gist.github.com/bortzmeyer/8643239b33556257750a10a2cfd46600#gistcomment-1974817