Apex domains cannot have CNAME records.
Question and response
Question
dig restricted.in. NS
Answer
restricted.in. 4 NS ns2.restricted.in.
restricted.in. 4 NS ns3.restricted.in.
restricted.in. 4 NS ns1.restricted.in.
Authority
The response has no authority records.
Additional
ns1.restricted.in. 4 A 180.149.63.3
ns2.restricted.in. 4 A 180.149.63.66
ns3.restricted.in. 4 A 14.139.6.10
ns1.restricted.in. 4 AAAA 2405:8a00:aa:0:0:0:0:aa
ns2.restricted.in. 4 AAAA 2405:8a00:bb:0:0:0:0:bb
ns3.restricted.in. 4 AAAA 2405:8a00:4:0:0:0:0:4
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0