Apex domains cannot have CNAME records.
Question and response
Question
dig ackstorm.net. NS
Answer
ackstorm.net. 5 NS nstwo.ackstorm.com.
ackstorm.net. 5 NS nsone.ackstorm.com.
Authority
The response has no authority records.
Additional
nsone.ackstorm.com. 5 A 62.97.115.10
nstwo.ackstorm.com. 5 A 35.187.34.236
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0