Apex domains cannot have CNAME records.
Question and response
Question
dig capital. NS
Answer
capital. 5 NS v0n3.nic.capital.
capital. 5 NS v2n0.nic.capital.
capital. 5 NS v2n1.nic.capital.
capital. 5 NS v0n0.nic.capital.
capital. 5 NS v0n2.nic.capital.
capital. 5 NS v0n1.nic.capital.
Authority
The response has no authority records.
Additional
v0n0.nic.capital. 148186 A 65.22.28.10
v0n1.nic.capital. 148186 A 65.22.29.10
v0n2.nic.capital. 148186 A 65.22.30.10
v0n3.nic.capital. 148186 A 161.232.14.10
v2n0.nic.capital. 148186 A 65.22.31.10
v2n1.nic.capital. 148186 A 161.232.15.10
v0n0.nic.capital. 148186 AAAA 2a01:8840:1e:0:0:0:0:10
v0n1.nic.capital. 148186 AAAA 2a01:8840:1f:0:0:0:0:10
v0n2.nic.capital. 148186 AAAA 2a01:8840:20:0:0:0:0:10
v0n3.nic.capital. 148186 AAAA 2a01:8840:f8:0:0:0:0:10
v2n0.nic.capital. 148186 AAAA 2a01:8840:21:0:0:0:0:10
v2n1.nic.capital. 148186 AAAA 2a01:8840:f9:0:0:0:0:10
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0