2019102901.pamx1.hotmail.com has no NS records.
NS records for this zone are defined at pamx1.hotmail.com.
NS records for this zone are defined at pamx1.hotmail.com.
Question and response
Question
dig 2019102901.pamx1.hotmail.com. NS
Answer
The response has no answer records.
Authority
pamx1.hotmail.com. 300 SOA ns1-35.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0