Apex domains cannot have CNAME records.
Question and response
Question
dig mountainview-m.com. NS
Answer
mountainview-m.com. 5 NS ns1.mountainview-m.com.
mountainview-m.com. 5 NS ns2.mountainview-m.com.
Authority
The response has no authority records.
Additional
ns1.mountainview-m.com. 5 A 192.227.70.41
ns2.mountainview-m.com. 5 A 192.227.70.45
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0