Apex domains cannot have CNAME records.
Question and response
Question
dig adequatesystems.com. NS
Answer
adequatesystems.com. 5 NS ns2.adequatesystems.com.
adequatesystems.com. 5 NS ns1.adequatesystems.com.
Authority
The response has no authority records.
Additional
ns1.adequatesystems.com. 5 A 91.204.117.14
ns2.adequatesystems.com. 5 A 91.204.117.15
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0