Question and response
Question
dig dnsv4.com. NS
Answer
dnsv4.com. 86400 NS ns3.dnsv4.com.
dnsv4.com. 86400 NS ns4.dnsv4.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0