cao-sh.com CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig cao-sh.com. NS

Answer

cao-sh.com. 5 NS ns1.cao-sh.com. cao-sh.com. 5 NS ns2.cao-sh.com.

Authority

The response has no authority records.

Additional

ns1.cao-sh.com. 5 A 188.93.140.225 ns2.cao-sh.com. 5 A 188.93.140.243 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0