Registro IPv4
host: telmex.mx
class: IN
ttl: 2354
type: A
ip: 200.57.176.145

Servidores DNS Principal (mname) y Secundario (rname)
host: telmex.mx
class: IN
ttl: 2356
type: SOA
mname: ns8.telmex.com
rname: dominios.telmex.com
serial: 2021112900
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 3600