n4.02.net has no CNAME records.
Question and response
Question
dig n4.02.net. NS
Answer
The response has no answer records.
Authority
02.net. 3600 SOA n1.02.net. hostmaster.02.net. 2022011701 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0