Apex domains cannot have CNAME records.
Question and response
Question
dig transmissionco.net. NS
Answer
transmissionco.net. 5 NS ns1.transmissionco.net.
transmissionco.net. 5 NS ns1.tinka.africa.
Authority
The response has no authority records.
Additional
ns1.tinka.africa. 5 A 139.84.235.208
ns1.transmissionco.net. 5 A 78.141.235.25
ns1.tinka.africa. 5 AAAA 2a05:f480:3000:205f:5400:4ff:fea4:e565
ns1.transmissionco.net. 5 AAAA 2001:19f0:7401:890d:5400:4ff:fea8:9ffa
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0