Any reason why CISP dns cant resolve slack.com?
dig slack.com. @154.0.1.1
; <<>> DiG 9.16.1-Ubuntu <<>> slack.com. @154.0.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 18889
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;slack.com. IN A
;; Query time: 4 msec
;; SERVER: 154.0.1.1#53(154.0.1.1)
;; WHEN: Fri Oct 01 10:26:16 SAST 2021
;; MSG SIZE rcvd: 38
dig slack.com. @1.1.1.1
; <<>> DiG 9.16.1-Ubuntu <<>> slack.com. @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5911
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;slack.com. IN A
;; ANSWER SECTION:
slack.com. 9 IN A 13.245.118.79
slack.com. 9 IN A 13.245.57.14
slack.com. 9 IN A 13.245.151.41
slack.com. 9 IN A 13.245.52.31
;; Query time: 0 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Fri Oct 01 10:26:24 SAST 2021
;; MSG SIZE rcvd: 102