Question and response
Question
dig fai.us.com. MX
Answer
fai.us.com. 1800 MX 10 mail.fai.us.com.
Authority
fai.us.com. 1800 NS dns1.registrar-servers.com.
fai.us.com. 1800 NS dns2.registrar-servers.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0