ns2.sktechno.com has no CNAME records.
Question and response
Question
dig ns2.sktechno.com. NS
Answer
The response has no answer records.
Authority
sktechno.com. 1401 SOA ns1.sktechno.com. info.sktechno.net. 2026021601 10800 3600 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0