dc.xsunucu.com has no NS records.
NS records for this zone are defined at xsunucu.com.
NS records for this zone are defined at xsunucu.com.
Question and response
Question
dig dc.xsunucu.com. NS
Answer
The response has no answer records.
Authority
xsunucu.com. 1800 SOA hugh.ns.cloudflare.com. dns.cloudflare.com. 2398400752 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0