Apex domains cannot have CNAME records.
Question and response
Question
dig pugmarks.net. NS
Answer
pugmarks.net. 2 NS ns.pugmarks.com.
pugmarks.net. 2 NS ns1.pugmarks.com.
Authority
The response has no authority records.
Additional
ns.pugmarks.com. 5 A 203.193.166.50
ns1.pugmarks.com. 5 A 103.171.97.200
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0