Unable to resolve www.tailwindui.com

Trying to resolve www.tailwindui.com through 1.1.1.2 (and 1.0.0.2) returns 0.0.0.0
The domain will resolve through 1.1.1.1 though - dig results follow;

VT is showing the site as clean;

dig @1.1.1.2 www.tailwindui.com
; <<>> DiG 9.10.6 <<>> @1.1.1.2 www.tailwindui.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12962
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;www.tailwindui.com. IN A
;; ANSWER SECTION:
www.tailwindui.com. 60 IN A 0.0.0.0
;; Query time: 79 msec
;; SERVER: 1.1.1.2#53(1.1.1.2)
;; WHEN: Thu Aug 11 11:09:11 BST 2022
;; MSG SIZE rcvd: 63

dig @1.1.1.1 www.tailwindui.com
; <<>> DiG 9.10.6 <<>> @1.1.1.1 www.tailwindui.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25325
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232

;; QUESTION SECTION:
;www.tailwindui.com. IN A
;; ANSWER SECTION:
www.tailwindui.com. 300 IN A 104.21.24.52
www.tailwindui.com. 300 IN A 172.67.217.20
;; Query time: 42 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Thu Aug 11 11:09:18 BST 2022
;; MSG SIZE rcvd: 79

Greetings,

Thank you for asking.

Cloudflare returns 0.0.0.0 if the fully qualified domain name (FQDN) or IP in a DNS query is classified as malicious.

Source article: Set up Cloudflare 1.1.1.1 resolver · Cloudflare 1.1.1.1 docs

It seems the categorzation for your website/domain is the issue here as far as it’s marked as a “Malware” :thinking: by the Cloudflare Radar service, therefore 1.1.1.2 has got filtering implemented for malware blocking and doesn’t resolve your domain timely because miscategorization:

Kindly, you can submit your domain for re-categorization using a feedback form by visiting directly the link from above.

I’ve done it, however please do it yourself too just in case (click on the green Malware to uncheck it, so only the Information technology is left at the end):

Otherwise, if you received an email notice from the abuse team, then there’s nothing you can do but wait for ToS to review your account/domain.

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