Nameserver not resolving for 1.1.1.1

I’ve been getting reports that our domain (are.na) cannot be accessed for folks using 1.1.1.1 as a DNS provider. Can anyone point me in the right direction as to where I can get help with this?

dig ns are.na

; <<>> DiG 9.10.6 <<>> ns are.na
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13442
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;are.na.				IN	NS

;; ANSWER SECTION:
are.na.			86400	IN	NS	aria.ns.Cloudflare.com.
are.na.			86400	IN	NS	carter.ns.Cloudflare.com.

dig ns are.na @1.1.1.1

; <<>> DiG 9.10.6 <<>> ns are.na @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 8995
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;are.na.				IN	NS

Appears to be a DNSSEC issue

http://dnsviz.net/d/are.na/dnssec/

The entire TLD is broken

Thanks, any ideas as to how I should proceed?

Unless this is a domain specific DNSSEC issue (which it does not seem to be primarily) you need to contact the registry.

Thanks, will do.