Apex domains cannot have CNAME records.
Question and response
Question
dig s3-deprecated.us-west-2.amazonaws.com. NS
Answer
s3-deprecated.us-west-2.amazonaws.com. 5 NS ns-330.awsdns-41.com.
s3-deprecated.us-west-2.amazonaws.com. 5 NS ns-1929.awsdns-49.co.uk.
s3-deprecated.us-west-2.amazonaws.com. 5 NS ns-1296.awsdns-34.org.
s3-deprecated.us-west-2.amazonaws.com. 5 NS ns-856.awsdns-43.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0