ups.rm04.net has no NS records.
NS records for this zone are defined at rm04.net.
NS records for this zone are defined at rm04.net.
Question and response
Question
dig ups.rm04.net. NS
Answer
The response has no answer records.
Authority
rm04.net. 900 SOA ns1.acoustic-adm.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0