Apex domains cannot have CNAME records.
Question and response
Question
dig fibretech.net. NS
Answer
fibretech.net. 5 NS ns1.fibretech.net.
fibretech.net. 5 NS ns2.fibretech.net.
Authority
The response has no authority records.
Additional
ns1.fibretech.net. 5 A 209.148.132.165
ns2.fibretech.net. 5 A 209.148.128.212
ns1.fibretech.net. 5 AAAA 2607:f798:140:202:0:2091:4813:2165
ns2.fibretech.net. 5 AAAA 2607:f798:140:302:0:2091:4812:8212
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0