Apex domains cannot have CNAME records.
Question and response
Question
dig votigo.com. NS
Answer
votigo.com. 5 NS ns-916.awsdns-50.net.
votigo.com. 5 NS ns-1097.awsdns-09.org.
votigo.com. 5 NS ns-1844.awsdns-38.co.uk.
votigo.com. 5 NS ns-384.awsdns-48.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0