rigel.Materna.com has no CNAME records.
Question and response
Question
dig rigel.Materna.com. NS
Answer
The response has no answer records.
Authority
Materna.com. 2575 SOA rigel.Materna.com. hostmaster.Materna.com. 2025080502 3600 7200 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0