12.10.211.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 12.10.211.in-addr.arpa. NS

Answer

12.10.211.in-addr.arpa. 3 NS ns01.idc.jp. 12.10.211.in-addr.arpa. 3 NS ns02.idc.jp. 12.10.211.in-addr.arpa. 3 NS ns03.idc.jp.

Authority

The response has no authority records.

Additional

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