Apex domains cannot have CNAME records.
Question and response
Question
dig tipalti.com. NS
Answer
tipalti.com. 4 NS ns-611.awsdns-12.net.
tipalti.com. 4 NS ns-254.awsdns-31.com.
tipalti.com. 4 NS ns-1949.awsdns-51.co.uk.
tipalti.com. 4 NS ns-1356.awsdns-41.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0