_netblocks.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 _netblocks.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