Registro DMARC
v=DMARC1; p=quarantine; adkim=r; aspf=r; rua=mailto:dmarc_rua@onsecureserver.net;

Registro IPv4
host: expresscouriers.com
class: IN
ttl: 1287
type: A
ip: 15.197.225.128

Registro IPv4
host: expresscouriers.com
class: IN
ttl: 1287
type: A
ip: 3.33.251.168

Servidores DNS Principal (mname) y Secundario (rname)
host: expresscouriers.com
class: IN
ttl: 3600
type: SOA
mname: ns63.domaincontrol.com
rname: dns.jomax.net
serial: 2026052205
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600