Apex domains cannot have CNAME records.
Question and response
Question
dig pangia.biz. NS
Answer
pangia.biz. 4 NS ns10.mail2world.com.
pangia.biz. 4 NS mwdns12vmoc.m2wprod.com.
pangia.biz. 4 NS mwdns10vmoc.mail2world.com.
pangia.biz. 4 NS ns02.mail2world.com.
pangia.biz. 4 NS ns11.mail2world.com.
pangia.biz. 4 NS mwdns02oc.
pangia.biz. 4 NS dns.mail2world.com.
Authority
The response has no authority records.
Additional
dns.mail2world.com. 4 A 209.67.129.15
ns10.mail2world.com. 4 A 74.202.142.162
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0