Apex domains cannot have CNAME records.
Question and response
Question
dig hashpointers.com. NS
Answer
hashpointers.com. 4 NS ns-1178.awsdns-19.org.
hashpointers.com. 4 NS ns-489.awsdns-61.com.
hashpointers.com. 4 NS ns-667.awsdns-19.net.
hashpointers.com. 4 NS ns-1736.awsdns-25.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0