Apex domains cannot have CNAME records.
Question and response
Question
dig paragonlenses.com. NS
Answer
paragonlenses.com. 5 NS ns1.paragonlenses.com.
paragonlenses.com. 5 NS ns2.paragonlenses.com.
Authority
The response has no authority records.
Additional
ns1.paragonlenses.com. 5 A 57.129.147.42
ns2.paragonlenses.com. 5 A 51.75.166.180
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0