Apex domains cannot have CNAME records.
Question and response
Question
dig nyblvd.com. NS
Answer
nyblvd.com. 4 NS ns-1640.awsdns-13.co.uk.
nyblvd.com. 4 NS ns-1356.awsdns-41.org.
nyblvd.com. 4 NS ns-1515.awsdns-61.org.
nyblvd.com. 4 NS ns-1520.awsdns-62.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0