mail.miclaro.com.ec has no NS records.
NS records for this zone are defined at miclaro.com.ec.
NS records for this zone are defined at miclaro.com.ec.
Question and response
Question
dig mail.miclaro.com.ec. NS
Answer
The response has no answer records.
Authority
miclaro.com.ec. 900 SOA dns1.porta.net. hostmaster.claro.com.ec. 172 28800 18000 1800 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0