smtp1o.xnet.ro has no NS records.
NS records for this zone are defined at xnet.ro.
NS records for this zone are defined at xnet.ro.
Question and response
Question
dig smtp1o.xnet.ro. NS
Answer
The response has no answer records.
Authority
xnet.ro. 900 SOA ns01.vodafonenet.ro. dnsadmin_ro.vodafone.com. 2020061624 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0