217.0.81.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 217.0.81.in-addr.arpa. NS

Answer

217.0.81.in-addr.arpa. 5 NS slave.casablanca.cz. 217.0.81.in-addr.arpa. 5 NS ns1.casablanca.cz.

Authority

The response has no authority records.

Additional

ns1.casablanca.cz. 5 A 217.11.224.3 slave.casablanca.cz. 5 A 193.165.246.74 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0