mailer1.factura.telecentro.com.ar has no NS records.
NS records for this zone are defined at factura.telecentro.com.ar.
NS records for this zone are defined at factura.telecentro.com.ar.
Question and response
Question
dig mailer1.factura.telecentro.com.ar. NS
Answer
The response has no answer records.
Authority
factura.telecentro.com.ar. 86400 SOA ns1.telecentro.net.ar. webmaster.lacientouno.com.ar. 2024051502 7200 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0