sleipnir.asbyrgi.net has no CNAME records.
Question and response
Question
dig sleipnir.asbyrgi.net. NS
Answer
The response has no answer records.
Authority
asbyrgi.net. 120 SOA jokulsa.asbyrgi.net. hostmaster.tisf.net. 2026030516 3600 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0