Apex domains cannot have CNAME records.
Question and response
Question
dig metronetinc.net. NS
Answer
metronetinc.net. 5 NS ns3.qservco.com.
metronetinc.net. 5 NS ns2.qservco.com.
metronetinc.net. 5 NS ns1.qservco.com.
Authority
The response has no authority records.
Additional
ns1.qservco.com. 5 A 206.225.75.131
ns2.qservco.com. 5 A 152.117.70.210
ns3.qservco.com. 5 A 172.190.89.229
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0