correo.rau.edu.uy has no NS records.
NS records for this zone are defined at rau.edu.uy.
NS records for this zone are defined at rau.edu.uy.
Question and response
Question
dig mta.seciu.edu.uy. NS
Answer
The response has no answer records.
Authority
seciu.edu.uy. 86400 SOA seciu.uy. teccom.seciu.uy. 202603230 10800 3600 432000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0