Apex domains cannot have CNAME records.
Question and response
Question
dig nic.agency. NS
Answer
nic.agency. 5 NS v0n1.nic.agency.
nic.agency. 5 NS v0n0.nic.agency.
nic.agency. 5 NS v0n3.nic.agency.
nic.agency. 5 NS v2n0.nic.agency.
nic.agency. 5 NS v2n1.nic.agency.
nic.agency. 5 NS v0n2.nic.agency.
Authority
The response has no authority records.
Additional
v0n0.nic.agency. 142519 A 65.22.24.2
v0n1.nic.agency. 69517 A 65.22.25.2
v0n2.nic.agency. 19482 A 65.22.26.2
v0n3.nic.agency. 142519 A 161.232.12.2
v2n0.nic.agency. 133407 A 65.22.27.2
v2n1.nic.agency. 131966 A 161.232.13.2
v0n0.nic.agency. 142519 AAAA 2a01:8840:1a:0:0:0:0:2
v0n1.nic.agency. 69517 AAAA 2a01:8840:1b:0:0:0:0:2
v0n2.nic.agency. 19482 AAAA 2a01:8840:1c:0:0:0:0:2
v0n3.nic.agency. 142519 AAAA 2a01:8840:f6:0:0:0:0:2
v2n0.nic.agency. 133407 AAAA 2a01:8840:1d:0:0:0:0:2
v2n1.nic.agency. 131966 AAAA 2a01:8840:f7:0:0:0:0:2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0