nirvana.valis.com has no CNAME records.
Question and response
Question
dig nirvana.valis.com. NS
Answer
The response has no answer records.
Authority
Valis.COM. 96 SOA Valis.COM. psi.Valis.COM. 2024030601 10800 3600 2492000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0