Cloudflare 1.1.1.1 returns SERVFAIL - perhaps some kind of timeout is there
dpanic@master:/home/dpanic$ dig www.lotto.de @1.1.1.1
; <<>> DiG 9.11.3-1ubuntu1.2-Ubuntu <<>> www.lotto.de @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: **SERVFAIL**, id: 21944
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;www.lotto.de. IN A
;; ANSWER SECTION:
www.lotto.de. 10785 IN CNAME www.wip.lotto.de.
;; Query time: 2218 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Wed Oct 17 10:30:44 CEST 2018
;; MSG SIZE rcvd: 63
Google 8.8.8.8 resolves without problems
dpanic@master:/home/dpanic$ dig www.lotto.de @8.8.8.8
; <<>> DiG 9.11.3-1ubuntu1.2-Ubuntu <<>> www.lotto.de @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31107
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.lotto.de. IN A
;; ANSWER SECTION:
www.lotto.de. 1187 IN CNAME www.wip.lotto.de.
www.wip.lotto.de. 2 IN A 62.159.186.104
;; Query time: 22 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Oct 17 10:32:54 CEST 2018
;; MSG SIZE rcvd: 79
$ dig +short CHAOS TXT id.server @1.1.1.1
“BEG”
$ dig @ns3.Cloudflare.com whoami.Cloudflare.com txt +short
“109.92.176.54”