Registro IPv4
host: medicaltextbook.com
class: IN
ttl: 90
type: A
ip: 162.255.225.40

Servidores DNS Principal (mname) y Secundario (rname)
host: medicaltextbook.com
class: IN
ttl: 21600
type: SOA
mname: ns1.greenroomcreations.com
rname: logs.servaxnet.com
serial: 2017101304
refresh: 3600
retry: 7200
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: medicaltextbook.com
class: IN
ttl: 90
type: MX
pri: 0
target: medicaltextbook.com