Question and response
Question
dig corevnub.com. MX
Answer
corevnub.com. 1799 MX 5 mail.techenub.com.
Authority
corevnub.com. 1800 NS dns1.registrar-servers.com.
corevnub.com. 1800 NS dns2.registrar-servers.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0