mx.creativeopera.org has no NS records.
NS records for this zone are defined at creativeopera.org.
NS records for this zone are defined at creativeopera.org.
Question and response
Question
dig mx.creativeopera.org. NS
Answer
The response has no answer records.
Authority
creativeopera.org. 3600 SOA dns.creativeopera.org. hostmaster.creativeopera.org. 1999928036 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0