Blog DNS Toolbox: How to Perform a Full DNS Enumeration and Domain Research

A records

Defense.Net, Inc
205.178.132.182   104

AAAA records

NO RECORDS

MX records

Amazon.com, Inc.
10 mx.coxmail.com4,551

NS records

Cox Communications Inc.
ns2.coxmail.com3,039
ns1.coxmail.com3,040

SOA records

ttl: 28,800
email: dnsadmin@coxmail.com2,348

TXT

v=spf1 mx include:coxmail.com ?all

CNAME records pointed here1