Apex domains cannot have CNAME records.
Question and response
Question
dig butler-bremer.com. NS
Answer
butler-bremer.com. 3 NS ns3.butler-bremer.com.
butler-bremer.com. 3 NS mail.butler-bremer.com.
butler-bremer.com. 3 NS www.butler-bremer.com.
butler-bremer.com. 3 NS ns2.butler-bremer.com.
butler-bremer.com. 3 NS mydvr.butler-bremer.com.
Authority
The response has no authority records.
Additional
ns2.butler-bremer.com. 3 A 207.177.83.2
ns3.butler-bremer.com. 3 A 207.177.83.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0