Apex domains cannot have CNAME records.
Question and response
Question
dig ciach.net. NS
Answer
ciach.net. 5 NS dns3.ciach.net.
ciach.net. 5 NS www.ciach.net.
ciach.net. 5 NS dns2.ciach.net.
ciach.net. 5 NS fns1.42.pl.
Authority
The response has no authority records.
Additional
www.ciach.net. 5 A 185.41.68.61
dns2.ciach.net. 5 A 82.117.231.91
fns1.42.pl. 5 A 79.98.145.34
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0