SERVFAIL for some apple.com subdomains

My original post is hidden, here is additional information :

$ dig amp-api.apple.com @1.1.1.1
; <<>> DiG 9.10.6 <<>> amp-api.apple.com @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 48015
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;amp-api.apple.com. IN A
;; Query time: 40 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Wed Oct 14 16:04:37 CEST 2020
;; MSG SIZE rcvd: 46

$ dig amp-api.apple.com @1.0.0.1
; <<>> DiG 9.10.6 <<>> amp-api.apple.com @1.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 31180
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;amp-api.apple.com. IN A
;; Query time: 37 msec
;; SERVER: 1.0.0.1#53(1.0.0.1)
;; WHEN: Wed Oct 14 16:04:44 CEST 2020
;; MSG SIZE rcvd: 46

$ dig amp-api.apple.com @8.8.8.8
; <<>> DiG 9.10.6 <<>> amp-api.apple.com @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52761
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;amp-api.apple.com. IN A
;; AUTHORITY SECTION:
apple.com. 1799 IN SOA nserver.apple.com. hostmaster.apple.com. 2010120151 900 900 2016000 14400
;; Query time: 36 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Oct 14 16:04:51 CEST 2020
;; MSG SIZE rcvd: 101

$ dig amp-api.apple.com @10.0.0.1
; <<>> DiG 9.10.6 <<>> amp-api.apple.com @10.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59643
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;amp-api.apple.com. IN A
;; AUTHORITY SECTION:
apple.com. 1722 IN SOA nserver.apple.com. hostmaster.apple.com. 2010120151 900 900 2016000 14400
;; Query time: 33 msec
;; SERVER: 10.0.0.1#53(10.0.0.1)
;; WHEN: Wed Oct 14 16:06:08 CEST 2020
;; MSG SIZE rcvd: 101

$ dig +short CHAOS TXT id.server @1.1.1.1
"CDG"

$ dig +short CHAOS TXT id.server @1.0.0.1
"CDG"