Question and response
Question
dig 38.in-addr.arpa. NS
Answer
38.in-addr.arpa. 43200 NS auth1.dns.cogentco.com.
38.in-addr.arpa. 43200 NS auth2.dns.cogentco.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0