Hi Hank,

While I can't answer your inquiry, unfortunately, I can tell you that there's no such thing as a stupid or newbish question here. I hope I can speak on behalf of the Atlas community when I say that we're a really open and supportive community to anyone working with Internet measurements, so please don't hesitate to ask in the future!

Warm regards,

-Michael

On Tue, Apr 29, 2025 at 8:28 AM Hank Nussbacher <hank@interall.co.il> wrote:

Perhaps a newbie question:

I am doing a DNS measurement and almost all probes return NXDOMAIN
(expected), yet one probe returns NOERROR.

How can I determine which DNS server it is using to provide a NOERROR?

See attached json.

Thanks,

Hank
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