i77.204.0.134.omantel.net.om has no CNAME records.
Question and response
Question
dig i77.204.0.134.omantel.net.om. NS
Answer
The response has no answer records.
Authority
omantel.net.om. 244 SOA ivan.ns.cloudflare.com. dns.cloudflare.com. 2395707491 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0