DoH often fails

#1

Bildschirmfoto 2020-02-04 um 12.20.32
Bildschirmfoto 2020-02-04 um 12.20.321334×707 84.2 KB

When I execute 50 dns requests against cloudfares’ doh endpoint, I receive a lot of SERVFAIL

Try it for yourself (hit the green RUN button):

#2

With google’s doh, it does not fail:

const url = 'https://dns.google.com/resolve?name=ijzermans.com&type=TXT';

#3

any ideas or suggestions?

#4

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