Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: worldcitylist.com
class: IN
ttl: 1310
type: A
ip: 185.158.133.1

Servidores DNS Principal (mname) y Secundario (rname)
host: worldcitylist.com
class: IN
ttl: 84110
type: SOA
mname: ns1125.ui-dns.de
rname: hostmaster.1und1.com
serial: 2017060110
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600

Servidor de Correo
host: worldcitylist.com
class: IN
ttl: 1310
type: MX
pri: 10
target: mx00.ionos.com

Servidor de Correo
host: worldcitylist.com
class: IN
ttl: 1310
type: MX
pri: 10
target: mx01.ionos.com

Información TXT
host: worldcitylist.com
class: IN
ttl: 1310
type: TXT
txt: v=spf1 include:_spf-us.ionos.com ~all
entries: Array