xdb-ro2.prometeus.net has no NS records.
NS records for this zone are defined at prometeus.net.
NS records for this zone are defined at prometeus.net.
Question and response
Question
dig xdb-ro2.prometeus.net. NS
Answer
The response has no answer records.
Authority
prometeus.net. 3600 SOA ns1.prometeus.net. sysadmin.prometeus.com. 905336226 10800 3600 604800 86400
Additional
. 0 OPT ; payload 2800, xrcode 0, version 0, flags 0