node-3.infogral.is has no CNAME records.
Question and response
Question
dig node-3.infogral.is. NS
Answer
The response has no answer records.
Authority
infogral.is. 281 SOA node-1.infogral.is. zonemaster.infogral.is. 2601 120 60 2592000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0