Apex domains cannot have CNAME records.
Question and response
Question
dig inhostedns.com. NS
Answer
inhostedns.com. 5 NS ns31.inhostedns.org.
inhostedns.com. 5 NS ns211.inhostedns.net.
inhostedns.com. 5 NS ns21.inhostedns.net.
inhostedns.com. 5 NS ns11.inhostedns.com.
inhostedns.com. 5 NS ns311.inhostedns.org.
Authority
The response has no authority records.
Additional
ns11.inhostedns.com. 5 A 185.104.44.20
ns21.inhostedns.net. 5 A 185.104.46.20
ns31.inhostedns.org. 5 A 167.235.84.34
ns211.inhostedns.net. 5 A 185.104.46.25
ns311.inhostedns.org. 5 A 167.235.84.44
ns11.inhostedns.com. 5 AAAA 2a06:6440:0:2c14:0:0:0:1
ns21.inhostedns.net. 5 AAAA 2a06:6440:0:2e14:0:0:0:1
ns31.inhostedns.org. 5 AAAA 2a01:4f8:fff0:142:101:0:0:1
ns211.inhostedns.net. 5 AAAA 2a06:6440:0:2e19:0:0:0:1
ns311.inhostedns.org. 5 AAAA 2a01:4f8:fff0:142:102:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0