pool.mada.ps has no CNAME records.
Question and response
Question
dig pool.mada.ps. NS
Answer
The response has no answer records.
Authority
mada.ps. 5635 SOA dns5.mada-alarab.com. system.mada.ps. 2026022102 3600 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0