Question and response
Question
dig mx.doct.org.ua. NS
Answer
mx.doct.org.ua. 5 CNAME mx0.doct.org.ua.
Authority
doct.org.ua. 3063 SOA ns.doct.org.ua. hostmaster.doct.org.ua. 2014091133 3600 900 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0