s602e.ik2.com has no CNAME records.
Question and response
Question
dig s602e.ik2.com. NS
Answer
The response has no answer records.
Authority
ik2.com. 10800 SOA ns1.ik2.com. dns.ik2.com. 2026021102 14400 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0