ns2.superonline.net has no CNAME records.
Question and response
Question
dig ns2.superonline.net. NS
Answer
The response has no answer records.
Authority
superonline.net. 300 SOA ns4.superonline.net. system.superonline.net. 2026030404 3600 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0