Apex domains cannot have CNAME records.
Question and response
Question
dig pwkt.citra.net.id. NS
Answer
pwkt.citra.net.id. 5 NS badran.as23951.com.
pwkt.citra.net.id. 5 NS tugu.as23951.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0