ns1.visp.net has no CNAME records.
Question and response
Question
dig ns1.visp.net. NS
Answer
The response has no answer records.
Authority
visp.net. 301 SOA ns.visp.net. hostmaster.visp.net. 2026021902 3600 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0