librenms.red-spectrum.com has no CNAME records.
Question and response
Question
dig librenms.red-spectrum.com. NS
Answer
The response has no answer records.
Authority
red-spectrum.com. 7701 SOA ns1.box.red-spectrum.com. hostmaster.box.red-spectrum.com. 2026021709 7200 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0