jupiter.dc4.ro has no CNAME records.
Question and response
Question
dig jupiter.dc4.ro. NS
Answer
The response has no answer records.
Authority
dc4.ro. 4544 SOA ns1.he.net. hostmaster.he.net. 2025111700 86400 7200 3600000 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0