Question and response
Question
dig res-olt.nbh.ptd.net. NS
Answer
res-olt.nbh.ptd.net. 37968 NS dns2.ptd.net.
res-olt.nbh.ptd.net. 37968 NS dns6.ptd.net.
res-olt.nbh.ptd.net. 37968 NS dns3.ptd.net.
res-olt.nbh.ptd.net. 37968 NS dns5.ptd.net.
res-olt.nbh.ptd.net. 37968 NS dns4.ptd.net.
res-olt.nbh.ptd.net. 37968 NS dns1.ptd.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0