trellix2._domainkey.bancotui.com has no NS records.
NS records for this zone are defined at bancotui.com.
NS records for this zone are defined at bancotui.com.
Question and response
Question
dig trellix2729.dkim.us.fireeyecloud.com. NS
Answer
The response has no answer records.
Authority
dkim.us.fireeyecloud.com. 900 SOA ns-1547.awsdns-01.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0