opal.mobily.com.sa has no NS records.
NS records for this zone are defined at mobily.com.sa.
NS records for this zone are defined at mobily.com.sa.
Question and response
Question
dig opal.mobily.com.sa. NS
Answer
The response has no answer records.
Authority
mobily.com.sa. 900 SOA gm-mlg-01.prod.mobily.lan. hostmaster.mobily.com.sa. 44605 10800 1080 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0