Apex domains cannot have CNAME records.
Question and response
Question
dig tmes-anz.trendmicro.com. NS
Answer
tmes-anz.trendmicro.com. 5 NS ns-595.awsdns-10.net.
tmes-anz.trendmicro.com. 5 NS ns-1706.awsdns-21.co.uk.
tmes-anz.trendmicro.com. 5 NS ns-221.awsdns-27.com.
tmes-anz.trendmicro.com. 5 NS ns-1445.awsdns-52.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0