dns1.xssl.net has no NS records.
NS records for this zone are defined at xssl.net.
NS records for this zone are defined at xssl.net.
Question and response
Question
dig dns1.xssl.net. NS
Answer
The response has no answer records.
Authority
xssl.net. 300 SOA dns1.xssl.net. cpanel-alerts.xssl.net. 2026022401 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0