ns2.singnet.com.sg has no CNAME records.
Question and response
Question
dig ns2.singnet.com.sg. NS
Answer
The response has no answer records.
Authority
singnet.com.sg. 1558 SOA dnspri.singnet.com.sg. hostmaster.singnet.com.sg. 2025081522 3600 1200 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0