Apex domains cannot have CNAME records.
Question and response
Question
dig informzrc.net. NS
Answer
informzrc.net. 5 NS ns-1983.awsdns-55.co.uk.
informzrc.net. 5 NS ns-1162.awsdns-17.org.
informzrc.net. 5 NS ns-452.awsdns-56.com.
informzrc.net. 5 NS ns-954.awsdns-55.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0