Servidores DNS Principal (mname) y Secundario (rname)
host: sld.cu
class: IN
ttl: 21600
type: SOA
mname: ns1.sld.cu
rname: adm.infomed.sld.cu
serial: 2025051401
refresh: 3600
retry: 3600
expire: 1209600
minimum-ttl: 1200

Servidor de Correo
host: sld.cu
class: IN
ttl: 21600
type: MX
pri: 10
target: mx.sld.cu

Información TXT
host: sld.cu
class: IN
ttl: 21600
type: TXT
txt: v=spf1 a:spf.sld.cu -all
entries: Array