host09.ecomsiam.com CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig host09.ecomsiam.com. NS

Answer

host09.ecomsiam.com. 5 NS ns18.ecomsiam.com. host09.ecomsiam.com. 5 NS ns17.ecomsiam.com.

Authority

The response has no authority records.

Additional

ns17.ecomsiam.com. 4 A 61.19.247.237 ns18.ecomsiam.com. 4 A 61.19.247.237 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0