Apex domains cannot have CNAME records.
Question and response
Question
dig marksteiners.com. NS
Answer
marksteiners.com. 4 NS ns1.marksteiners.com.
marksteiners.com. 4 NS ns2.marksteiners.com.
Authority
The response has no authority records.
Additional
ns1.marksteiners.com. 4 A 23.95.117.162
ns2.marksteiners.com. 4 A 209.54.101.69
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0