wwwmaster.ac.twooit.com has no NS records.
NS records for this zone are defined at twooit.com.
NS records for this zone are defined at twooit.com.
Question and response
Question
dig wwwmaster.ac.twooit.com. NS
Answer
The response has no answer records.
Authority
twooit.com. 3600 SOA ns1.routing.net. hostmaster.twooit.com. 2026011011 86400 7200 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0