Question and response
Question
dig cat. NS
Answer
cat. 900 NS anyc1.irondns.net.
cat. 900 NS cat.ns.nic.es.
cat. 900 NS nsc.nic.de.
cat. 900 NS cat.pch.net.
cat. 900 NS switch.nic.cat.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0