Apex domains cannot have CNAME records.
Question and response
Question
dig gwi.net. NS
Answer
gwi.net. 5 NS ns3.gwi.net.
gwi.net. 5 NS ns4.gwi.net.
Authority
The response has no authority records.
Additional
ns3.gwi.net. 5 A 207.5.128.9
ns4.gwi.net. 5 A 207.5.128.10
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0