Apex domains cannot have CNAME records.
Question and response
Question
dig togns.com. NS
Answer
togns.com. 4 NS ns-1101.awsdns-09.org.
togns.com. 4 NS ns-1967.awsdns-53.co.uk.
togns.com. 4 NS ns-85.awsdns-10.com.
togns.com. 4 NS ns-826.awsdns-39.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0