bb.beenets.com has no NS records.
NS records for this zone are defined at beenets.com.
NS records for this zone are defined at beenets.com.
Question and response
Question
dig bb.beenets.com. NS
Answer
The response has no answer records.
Authority
beenets.com. 60 SOA ns.beenets.com. dns-admin.beenets.com. 779 3600 600 1209600 60
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0