ALL A AAAA CAA CNAME MX NS PTR SOA SRV TXT ANY

No ANY records found for b.ns.arpa.

Try ns.arpa instead?

id 51804, opcode QUERY, rcode NOTIMP, flags QR RD RA
;QUESTION
b.ns.arpa. IN ANY
;ANSWER
;AUTHORITY
;ADDITIONAL

ANY Record Lookup

whatsmydns.net ANY Record Lookup tool lets you query DNS servers and get instant results.

Looking for easier to understand results? Use the Global DNS Checker tool.