Apex domains cannot have CNAME records.
Question and response
Question
dig ik2.com. NS
Answer
ik2.com. 5 NS ns2.ik2.com.
ik2.com. 5 NS ns2.spamflare.net.
ik2.com. 5 NS ns3.ik2.com.
ik2.com. 5 NS ns1.spamflare.net.
ik2.com. 5 NS ns1.ik2.com.
Authority
The response has no authority records.
Additional
ns1.ik2.com. 5 A 38.246.57.226
ns1.ik2.com. 5 A 45.76.132.113
ns1.ik2.com. 5 A 64.38.239.82
ns2.ik2.com. 5 A 38.246.57.230
ns2.ik2.com. 5 A 139.180.152.139
ns3.ik2.com. 5 A 66.228.130.218
ns3.ik2.com. 5 A 207.81.189.178
ns1.ik2.com. 5 AAAA 2a05:f480:1000:5bd:5400:5ff:feec:4f70
ns2.ik2.com. 5 AAAA 2401:c080:1400:728b:5400:5ff:feec:631e
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0