Question and response
Question
dig pi.cnr.it. NS
Answer
pi.cnr.it. 600 NS ns1.surfnet.nl.
pi.cnr.it. 600 NS ns2.iit.cnr.it.
pi.cnr.it. 600 NS ns1.iit.cnr.it.
pi.cnr.it. 600 NS nameserver.cnr.it.
pi.cnr.it. 600 NS dns2.ba.cnr.it.
Authority
The response has no authority records.
Additional
. 0 OPT [{Extended_DNS_Error: PROHIBITED}] ; payload 1232, xrcode 0, version 0, flags 0