Question and response
Question
dig spk.cz. NS
Answer
spk.cz. 86400 NS ns4.selectsystem.cz.
spk.cz. 86400 NS ns5.selectsystem.cz.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0