What are qatesttwai.gov/fttesttwai.gov?

[nanog at ml.karotte.org (Sebastian Wiesinger)]

Hello,

my resolver running on a dedicated server is warning about DNSSEC
validation failure for these two .gov domains 7 minutes after every
full hour:

Sep 26 13:07:04 alita unbound: [28931:0] info: validation failure
<qatesttwai.gov. NS IN>: no keys have a DS with algorithm
RSASHA1-NSEC3-SHA1 from 199.169.196.64 for key qatesttwai.gov. while
building chain of trust

Sep 26 13:07:04 alita unbound: [28931:0] info: validation failure
<fttesttwai.gov. NS IN>: no keys have a DS with algorithm
RSASHA1-NSEC3-SHA1 from 199.169.196.64 for key fttesttwai.gov. while
building chain of trust

Does anyone know what these are? There are placeholder https sites at
these hosts but nothing else.

Regards

Sebastian

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