dns2.bestel.com.mx has no NS records.
NS records for this zone are defined at bestel.com.mx.
NS records for this zone are defined at bestel.com.mx.
Question and response
Question
dig dns2.bestel.com.mx. NS
Answer
The response has no answer records.
Authority
bestel.com.mx. 900 SOA dns1.bestel.com.mx. nobody.bestel.com.mx. 2020013258 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0