Registro IPv4
host: slc21.com
class: IN
ttl: 1800
type: A
ip: 223.130.102.28

Servidores DNS Principal (mname) y Secundario (rname)
host: slc21.com
class: IN
ttl: 3600
type: SOA
mname: ns1.sdsns.com
rname: firechoi.sds.co.kr
serial: 2012122814
refresh: 3600
retry: 300
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: slc21.com
class: IN
ttl: 3600
type: MX
pri: 0
target: slc21-com.mail.protection.outlook.com

Información TXT
host: slc21.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com -all
entries: Array