Servidores DNS Principal (mname) y Secundario (rname)
host: ip90.com
class: IN
ttl: 180
type: SOA
mname: ns19.xincache.com
rname: enterprise1dnsadmin.dnspod.com
serial: 1576592129
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180

Servidor de Correo
host: ip90.com
class: IN
ttl: 604
type: MX
pri: 10
target: mxw.mxhichina.com

Servidor de Correo
host: ip90.com
class: IN
ttl: 604
type: MX
pri: 5
target: mxn.mxhichina.com

Información TXT
host: ip90.com
class: IN
ttl: 604
type: TXT
txt: v=spf1 include:spf.mxhichina.com -all
entries: Array