ses.onsolve.net has no NS records.
NS records for this zone are defined at onsolve.net.
NS records for this zone are defined at onsolve.net.
Question and response
Question
dig ses.onsolve.net. NS
Answer
The response has no answer records.
Authority
onsolve.net. 900 SOA ns-75.awsdns-09.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0