dns.xtremerubicons.com has no NS records.
NS records for this zone are defined at xtremerubicons.com.
NS records for this zone are defined at xtremerubicons.com.
Question and response
Question
dig dns.xtremerubicons.com. NS
Answer
The response has no answer records.
Authority
xtremerubicons.com. 3600 SOA dns.xtremerubicons.com. hostmaster.xtremerubicons.com. 1763271537 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0