Apex domains cannot have CNAME records.
Question and response
Question
dig chat. NS
Answer
chat. 5 NS v0n1.nic.chat.
chat. 5 NS v0n3.nic.chat.
chat. 5 NS v2n1.nic.chat.
chat. 5 NS v2n0.nic.chat.
chat. 5 NS v0n2.nic.chat.
chat. 5 NS v0n0.nic.chat.
Authority
The response has no authority records.
Additional
v0n0.nic.chat. 148760 A 65.22.32.42
v0n1.nic.chat. 148760 A 65.22.33.42
v0n2.nic.chat. 168647 A 65.22.34.42
v0n3.nic.chat. 165901 A 161.232.16.42
v2n0.nic.chat. 172800 A 65.22.35.42
v2n1.nic.chat. 168647 A 161.232.17.42
v0n0.nic.chat. 148760 AAAA 2a01:8840:22:0:0:0:0:42
v0n1.nic.chat. 148760 AAAA 2a01:8840:23:0:0:0:0:42
v0n2.nic.chat. 168647 AAAA 2a01:8840:24:0:0:0:0:42
v0n3.nic.chat. 165901 AAAA 2a01:8840:fa:0:0:0:0:42
v2n0.nic.chat. 172800 AAAA 2a01:8840:25:0:0:0:0:42
v2n1.nic.chat. 168647 AAAA 2a01:8840:fb:0:0:0:0:42
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0