Apex domains cannot have CNAME records.
Question and response
Question
dig libravp.com. NS
Answer
libravp.com. 4 NS ns-527.awsdns-01.net.
libravp.com. 4 NS ns-606.awsdns-11.net.
libravp.com. 4 NS ns-1840.awsdns-38.co.uk.
libravp.com. 4 NS ns-260.awsdns-32.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0