plonk.ict.pwr.wroc.pl has no NS records.
NS records for this zone are defined at ict.pwr.wroc.pl.
NS records for this zone are defined at ict.pwr.wroc.pl.
Question and response
Question
dig plonk.ict.pwr.wroc.pl. NS
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0