Query for lightsail.aws.amazon.com is not returning any A record.
This issue is also reported by other users at https://news.ycombinator.com/item?id=21699362.
$ dig lightsail.aws.amazon.com @1.1.1.1
; <<>> DiG 9.10.6 <<>> lightsail.aws.amazon.com @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33184
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;lightsail.aws.amazon.com. IN A
;; ANSWER SECTION:
lightsail.aws.amazon.com. 60 IN CNAME lbr.lightsail-lbr.com.
lbr.lightsail-lbr.com. 60 IN CNAME ap-southeast-1.lightsail.aws.amazon.com.
;; Query time: 521 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Wed Dec 04 23:45:08 +08 2019
;; MSG SIZE rcvd: 138
While the same query with 8.8.8.8 is working correctly.
$ dig lightsail.aws.amazon.com @8.8.8.8
; <<>> DiG 9.10.6 <<>> lightsail.aws.amazon.com @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16212
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;lightsail.aws.amazon.com. IN A
;; ANSWER SECTION:
lightsail.aws.amazon.com. 59 IN CNAME lbr.lightsail-lbr.com.
lbr.lightsail-lbr.com. 59 IN CNAME ap-southeast-1.lightsail.aws.amazon.com.
ap-southeast-1.lightsail.aws.amazon.com. 59 IN CNAME ap-southeast-1.console.aws.amazon.com.
ap-southeast-1.console.aws.amazon.com. 59 IN A 54.240.226.142
;; Query time: 412 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Dec 04 23:47:48 +08 2019
;; MSG SIZE rcvd: 167