Registro IPv4
host: internalmedicine101.com
class: IN
ttl: 1800
type: A
ip: 209.50.53.133

Servidores DNS Principal (mname) y Secundario (rname)
host: internalmedicine101.com
class: IN
ttl: 21600
type: SOA
mname: ns1.stablehost.com
rname: alerts.stablehost.com
serial: 2025050101
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 1800

Servidor de Correo
host: internalmedicine101.com
class: IN
ttl: 3600
type: MX
pri: 0
target: internalmedicine101.com

Información TXT
host: internalmedicine101.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +a +mx +ip4:209.50.53.133 include:_spf.reliablemail.org ~all
entries: Array