ubuntu-Ideapad-S10-3s.do.pc2linux.com has no CNAME records.
Question and response
Question
dig ubuntu-Ideapad-S10-3s.do.pc2linux.com. NS
Answer
The response has no answer records.
Authority
do.pc2linux.com. 10750 SOA do.pc2linux.com. asampau.gmail.com. 2026030608 360 180 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0