ubuntuIdeapadS103s.do.pc2linux.com has no CNAME records.
Question and response
Question
dig ubuntuIdeapadS103s.do.pc2linux.com. NS
Answer
The response has no answer records.
Authority
do.pc2linux.com. 4554 SOA do.pc2linux.com. asampau.gmail.com. 2026022500 360 180 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0