Apex domains cannot have CNAME records.
Question and response
Question
dig zorvintia.com. NS
Answer
zorvintia.com. 5 NS ns-1798.awsdns-32.co.uk.
zorvintia.com. 5 NS ns-42.awsdns-05.com.
zorvintia.com. 5 NS ns-741.awsdns-28.net.
zorvintia.com. 5 NS ns-1060.awsdns-04.org.
Authority
The response has no authority records.
Additional
ns-741.awsdns-28.net. 5 A 205.251.194.229
ns-1060.awsdns-04.org. 5 A 205.251.196.36
ns-1798.awsdns-32.co.uk. 5 A 205.251.199.6
ns-42.awsdns-05.com. 5 AAAA 2600:9000:5300:2a00:0:0:0:1
ns-741.awsdns-28.net. 5 AAAA 2600:9000:5302:e500:0:0:0:1
ns-1060.awsdns-04.org. 5 AAAA 2600:9000:5304:2400:0:0:0:1
ns-1798.awsdns-32.co.uk. 5 AAAA 2600:9000:5307:600:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0