Apex domains cannot have CNAME records.
Question and response
Question
dig abe.inetu.net. NS
Answer
abe.inetu.net. 5 NS ns4.inetu.net.
abe.inetu.net. 5 NS ns3.inetu.net.
Authority
The response has no authority records.
Additional
ns3.inetu.net. 4 A 74.85.141.3
ns4.inetu.net. 4 A 74.85.141.4
ns3.inetu.net. 4 AAAA 2607:fdf8:da:0:0:0:0:a1
ns4.inetu.net. 4 AAAA 2607:fdf8:da:0:0:0:0:a2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0