56.138.185.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 56.138.185.in-addr.arpa. NS

Answer

56.138.185.in-addr.arpa. 5 NS ns1.layer23.nl. 56.138.185.in-addr.arpa. 5 NS ns2.layer23.nl.

Authority

The response has no authority records.

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0