Apex domains cannot have CNAME records.
Question and response
Question
dig infiniroot.net. NS
Answer
infiniroot.net. 5 NS ns1.infiniroot.net.
infiniroot.net. 5 NS ns2.infiniroot.net.
infiniroot.net. 5 NS ns3.infiniroot.net.
Authority
The response has no authority records.
Additional
ns1.infiniroot.net. 5 A 212.120.32.150
ns2.infiniroot.net. 5 A 192.174.68.104
ns3.infiniroot.net. 5 A 176.97.158.104
ns2.infiniroot.net. 5 AAAA 2001:67c:1bc:0:0:0:0:104
ns3.infiniroot.net. 5 AAAA 2001:67c:10b8:0:0:0:0:104
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0