dnsadm-interno.uninet.net.mx has no NS records.
NS records for this zone are defined at uninet.net.mx.
NS records for this zone are defined at uninet.net.mx.
Question and response
Question
dig dnsadm-interno.uninet.net.mx. NS
Answer
The response has no answer records.
Authority
uninet.net.mx. 900 SOA dnsadm-interno.uninet.net.mx. adm-dns.reduno.com.mx. 11014 14400 3600 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0