Question and response
Question
dig online.pt. NS
Answer
online.pt. 86400 NS zee.tuxdns.net.
online.pt. 86400 NS niobe.100.pt.
online.pt. 86400 NS trinity.tuxdns.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0