ns.pol.net.in has no CNAME records.
Question and response
Question
dig ns.pol.net.in. NS
Answer
The response has no answer records.
Authority
pol.net.in. 9659 SOA ns4.ctrls.in. hostmaster.ctrls.in. 2022030733 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0