cool.bzctoons.net has no CNAME records.
Question and response
Question
dig cool.bzctoons.net. NS
Answer
The response has no answer records.
Authority
bzctoons.net. 544 SOA ns1.bzctoons.net. bzctoons.gmail.com. 2026020100 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0