Apex domains cannot have CNAME records.
Question and response
Question
dig silkandstockings.com. NS
Answer
silkandstockings.com. 5 NS ns-329.awsdns-41.com.
silkandstockings.com. 5 NS ns-722.awsdns-26.net.
silkandstockings.com. 5 NS ns-747.awsdns-29.net.
silkandstockings.com. 5 NS ns-2002.awsdns-58.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0