Apex domains cannot have CNAME records.
Question and response
Question
dig eventsforce.net. NS
Answer
eventsforce.net. 5 NS ns-1806.awsdns-33.co.uk.
eventsforce.net. 5 NS ns-209.awsdns-26.com.
eventsforce.net. 5 NS ns-990.awsdns-59.net.
eventsforce.net. 5 NS ns-1160.awsdns-17.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0