tra04.bubblesmail.net has no CNAME records.
Question and response
Question
dig tra04.bubblesmail.net. NS
Answer
The response has no answer records.
Authority
bubblesmail.net. 370 SOA ns49.domaincontrol.com. dns.jomax.net. 2023091900 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0