Question and response
Question
dig dns.cogentco.com. NS
Answer
dns.cogentco.com. 43200 NS auth2.dns.cogentco.com.
dns.cogentco.com. 43200 NS auth1.dns.cogentco.com.
Authority
The response has no authority records.
Additional
auth1.dns.cogentco.com. 10800 A 66.28.0.14
auth2.dns.cogentco.com. 10800 A 66.28.0.30
auth1.dns.cogentco.com. 43200 AAAA 2001:550:1:a:0:0:0:d
auth2.dns.cogentco.com. 43200 AAAA 2001:550:1:b:0:0:0:d
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0