ns1.chalmers.se has no CNAME records.
Question and response
Question
dig ns1.chalmers.se. NS
Answer
The response has no answer records.
Authority
chalmers.se. 600 SOA ns1.chalmers.se. cth-nic.chalmers.se. 2026030622 14400 3600 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0