Apex domains cannot have CNAME records.
Question and response
Question
dig medtechp.com. NS
Answer
medtechp.com. 1 NS pdns1.registrar-servers.com.
medtechp.com. 1 NS pdns2.registrar-servers.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0