Apex domains cannot have CNAME records.
Question and response
Question
dig incapdns.net. NS
Answer
incapdns.net. 5 NS ns1.incapdns.net.
incapdns.net. 5 NS ns2.incapdns.net.
incapdns.net. 5 NS ns3.incapdns.net.
incapdns.net. 5 NS ns4.incapdns.net.
incapdns.net. 5 NS ns5.incapdns.net.
incapdns.net. 5 NS ns6.incapdns.net.
Authority
The response has no authority records.
Additional
ns1.incapdns.net. 5 A 198.143.61.2
ns1.incapdns.net. 5 A 198.143.61.3
ns1.incapdns.net. 5 A 198.143.61.5
ns1.incapdns.net. 5 A 198.143.61.7
ns1.incapdns.net. 5 A 198.143.61.9
ns1.incapdns.net. 5 A 198.143.61.11
ns1.incapdns.net. 5 A 198.143.61.200
ns2.incapdns.net. 5 A 198.143.62.2
ns2.incapdns.net. 5 A 198.143.62.3
ns2.incapdns.net. 5 A 198.143.62.5
ns2.incapdns.net. 5 A 198.143.62.7
ns2.incapdns.net. 5 A 198.143.62.9
ns2.incapdns.net. 5 A 198.143.62.11
ns2.incapdns.net. 5 A 198.143.62.200
ns3.incapdns.net. 5 A 198.143.63.2
ns3.incapdns.net. 5 A 198.143.63.3
ns3.incapdns.net. 5 A 198.143.63.5
ns3.incapdns.net. 5 A 198.143.63.7
ns3.incapdns.net. 5 A 198.143.63.9
ns3.incapdns.net. 5 A 198.143.63.11
ns3.incapdns.net. 5 A 198.143.63.200
ns4.incapdns.net. 5 A 198.143.61.101
ns4.incapdns.net. 5 A 198.143.61.103
ns4.incapdns.net. 5 A 198.143.61.105
ns4.incapdns.net. 5 A 198.143.61.107
ns4.incapdns.net. 5 A 198.143.61.109
ns4.incapdns.net. 5 A 198.143.61.129
ns4.incapdns.net. 5 A 198.143.61.250
ns5.incapdns.net. 5 A 198.143.62.101
ns5.incapdns.net. 5 A 198.143.62.103
ns5.incapdns.net. 5 A 198.143.62.105
ns5.incapdns.net. 5 A 198.143.62.107
ns5.incapdns.net. 5 A 198.143.62.109
ns5.incapdns.net. 5 A 198.143.62.129
ns5.incapdns.net. 5 A 198.143.62.250
ns6.incapdns.net. 5 A 198.143.63.101
ns6.incapdns.net. 5 A 198.143.63.103
ns6.incapdns.net. 5 A 198.143.63.105
ns6.incapdns.net. 5 A 198.143.63.107
ns6.incapdns.net. 5 A 198.143.63.109
ns6.incapdns.net. 5 A 198.143.63.129
ns6.incapdns.net. 5 A 198.143.63.250
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0