ns4.indosatooredoo.com has no NS records.
NS records for this zone are defined at indosatooredoo.com.
NS records for this zone are defined at indosatooredoo.com.
Question and response
Question
dig ns4.indosatooredoo.com. NS
Answer
The response has no answer records.
Authority
indosatooredoo.com. 900 SOA external.auth-dns001-udc1. domain\.admin.indosatooredoo.com. 20152894 3600 3600 1728000 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0