Apex domains cannot have CNAME records.
Question and response
Question
dig developer.axcient.com. NS
Answer
developer.axcient.com. 5 NS ns-1980.awsdns-55.co.uk.
developer.axcient.com. 5 NS ns-1235.awsdns-26.org.
developer.axcient.com. 5 NS ns-186.awsdns-23.com.
developer.axcient.com. 5 NS ns-604.awsdns-11.net.
Authority
The response has no authority records.
Additional
ns-186.awsdns-23.com. 3 A 205.251.192.186
ns-604.awsdns-11.net. 3 A 205.251.194.92
ns-1235.awsdns-26.org. 3 A 205.251.196.211
ns-1980.awsdns-55.co.uk. 3 A 205.251.199.188
ns-186.awsdns-23.com. 3 AAAA 2600:9000:5300:ba00:0:0:0:1
ns-604.awsdns-11.net. 3 AAAA 2600:9000:5302:5c00:0:0:0:1
ns-1235.awsdns-26.org. 3 AAAA 2600:9000:5304:d300:0:0:0:1
ns-1980.awsdns-55.co.uk. 3 AAAA 2600:9000:5307:bc00:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0