Question and response
Question
dig secureserver.net. MX
Answer
secureserver.net. 3600 MX 0 secureserver-net.mail.protection.outlook.com.
Authority
secureserver.net. 3600 NS cns2.secureserver.net.
secureserver.net. 3600 NS cns1.secureserver.net.
secureserver.net. 3600 NS a9-67.akam.net.
secureserver.net. 3600 NS a8-67.akam.net.
secureserver.net. 3600 NS a6-66.akam.net.
secureserver.net. 3600 NS a20-65.akam.net.
secureserver.net. 3600 NS a1-245.akam.net.
secureserver.net. 3600 NS a11-64.akam.net.
Additional
cns2.secureserver.net. 86400 AAAA 2603:5:2200:0:0:0:0:64
cns2.secureserver.net. 86400 A 173.201.64.100
cns1.secureserver.net. 86400 AAAA 2603:5:2100:0:0:0:0:64
cns1.secureserver.net. 86400 A 97.74.96.100
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0