Apex domains cannot have CNAME records.
Question and response
Question
dig nic.network. NS
Answer
nic.network. 5 NS v2n0.nic.network.
nic.network. 5 NS v0n1.nic.network.
nic.network. 5 NS v0n2.nic.network.
nic.network. 5 NS v0n0.nic.network.
nic.network. 5 NS v0n3.nic.network.
nic.network. 5 NS v2n1.nic.network.
Authority
The response has no authority records.
Additional
v0n0.nic.network. 64615 A 65.22.32.36
v0n1.nic.network. 137992 A 65.22.33.36
v0n2.nic.network. 129931 A 65.22.34.36
v0n3.nic.network. 51448 A 161.232.16.36
v2n0.nic.network. 153284 A 65.22.35.36
v2n1.nic.network. 141390 A 161.232.17.36
v0n0.nic.network. 64615 AAAA 2a01:8840:22:0:0:0:0:36
v0n1.nic.network. 137992 AAAA 2a01:8840:23:0:0:0:0:36
v0n2.nic.network. 129931 AAAA 2a01:8840:24:0:0:0:0:36
v0n3.nic.network. 51448 AAAA 2a01:8840:fa:0:0:0:0:36
v2n0.nic.network. 153284 AAAA 2a01:8840:25:0:0:0:0:36
v2n1.nic.network. 141390 AAAA 2a01:8840:fb:0:0:0:0:36
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0