mail.lumenet.com.mx has no NS records.
NS records for this zone are defined at lumenet.com.mx.
NS records for this zone are defined at lumenet.com.mx.
Question and response
Question
dig mail.lumenet.com.mx. NS
Answer
The response has no answer records.
Authority
lumenet.com.mx. 600 SOA ns1.lumenet-comunicaciones.com. jbenitez.lumenet.com.mx. 2026022001 10800 3600 1209600 10800
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0