kerns2.gslb.net has no CNAME records.
Question and response
Question
dig kerns2.gslb.net. NS
Answer
The response has no answer records.
Authority
gslb.net. 3600 SOA kerns1.gslb.net. dns.gslb.net. 2026030702 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0