mail.tra.gov.om has no CNAME records.
Question and response
Question
dig mail.tra.gov.om. NS
Answer
The response has no answer records.
Authority
tra.gov.om. 1450 SOA ns3.ict.omantel.om. mahmood\.alfarsi.tra.gov.om. 151695 14400 7200 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0