Registro IPv4
host: usra.com
class: IN
ttl: 300
type: A
ip: 157.90.33.73

Registro IPv4
host: usra.com
class: IN
ttl: 300
type: A
ip: 157.90.33.74

Servidores DNS Principal (mname) y Secundario (rname)
host: usra.com
class: IN
ttl: 1800
type: SOA
mname: ns1.park-my-domain.net
rname: hostmaster.usra.com
serial: 2026050107
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400