Apex domains cannot have CNAME records.
Question and response
Question
dig latencyflow.info. NS
Answer
latencyflow.info. 5 NS ns-1230.awsdns-25.org.
latencyflow.info. 5 NS ns-978.awsdns-58.net.
latencyflow.info. 5 NS ns-287.awsdns-35.com.
latencyflow.info. 5 NS ns-1202.awsdns-22.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0