Registro IPv4
host: core4business.com
class: IN
ttl: 600
type: A
ip: 162.159.140.166

Servidores DNS Principal (mname) y Secundario (rname)
host: core4business.com
class: IN
ttl: 21600
type: SOA
mname: ns1083.ui-dns.de
rname: hostmaster.1und1.com
serial: 2017060112
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600

Servidor de Correo
host: core4business.com
class: IN
ttl: 3600
type: MX
pri: 1
target: aspmx.l.google.com

Servidor de Correo
host: core4business.com
class: IN
ttl: 3600
type: MX
pri: 10
target: alt4.aspmx.l.google.com

Servidor de Correo
host: core4business.com
class: IN
ttl: 3600
type: MX
pri: 5
target: alt1.aspmx.l.google.com

Servidor de Correo
host: core4business.com
class: IN
ttl: 3600
type: MX
pri: 5
target: alt2.aspmx.l.google.com

Servidor de Correo
host: core4business.com
class: IN
ttl: 3600
type: MX
pri: 10
target: alt3.aspmx.l.google.com

Información TXT
host: core4business.com
class: IN
ttl: 3600
type: TXT
txt: google-gws-recovery-domain-verification=53563624
entries: Array

Información TXT
host: core4business.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:_spf.google.com include:_spf-us.ionos.com ~all
entries: Array