Question and response
Question
dig join.liujo.com. NS
Answer
join.liujo.com. 5 CNAME liujo.emailofficer.com.
Authority
emailofficer.com. 3474 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1773138277 43200 3600 604800 3601
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0