I noticed that 1.1.1.1 and 1.0.0.1 don’t resolve the domain www.schnaeppo.de but return SERVFAIL instead when looking up this domain.
Here’s the link to the output of the diagnostic tool:
Here’s useful output from a linux machine in my network:
dig www.schnaeppo.de @1.1.1.1
; <<>> DiG 9.16.1-Ubuntu <<>> www.schnaeppo.de @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 58455
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;www.schnaeppo.de. IN A
;; Query time: 7 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Fr Jun 12 19:53:21 CEST 2020
;; MSG SIZE rcvd: 45
dig www.schnaeppo.de @1.0.0.1
; <<>> DiG 9.16.1-Ubuntu <<>> www.schnaeppo.de @1.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 51905
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;www.schnaeppo.de. IN A
;; Query time: 2119 msec
;; SERVER: 1.0.0.1#53(1.0.0.1)
;; WHEN: Fr Jun 12 19:53:52 CEST 2020
;; MSG SIZE rcvd: 45
dig www.schnaeppo.de @8.8.8.8
; <<>> DiG 9.16.1-Ubuntu <<>> www.schnaeppo.de @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13178
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.schnaeppo.de. IN A
;; ANSWER SECTION:
www.schnaeppo.de. 599 IN CNAME d1kkjapry09zec.cloudfront.net.
d1kkjapry09zec.cloudfront.net. 59 IN A 52.222.174.228
d1kkjapry09zec.cloudfront.net. 59 IN A 52.222.174.91
d1kkjapry09zec.cloudfront.net. 59 IN A 52.222.174.227
d1kkjapry09zec.cloudfront.net. 59 IN A 52.222.174.55
;; Query time: 27 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fr Jun 12 19:54:09 CEST 2020
;; MSG SIZE rcvd: 152
dig +short CHAOS TXT id.server @1.1.1.1
"FRA"
dig +short CHAOS TXT id.server @1.0.0.1
"FRA"