Registro IPv4
host: cs50.dev
class: IN
ttl: 90
type: A
ip: 54.80.188.251

Registro IPv4
host: cs50.dev
class: IN
ttl: 90
type: A
ip: 100.63.223.34

Registro CNAME (Alias)
host: code.cs50.io
class: IN
ttl: 300
type: CNAME
target: cs50.dev

Servidores DNS Principal (mname) y Secundario (rname)
host: cs50.dev
class: IN
ttl: 900
type: SOA
mname: ns-1481.awsdns-57.org
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Registro CNAME (Alias)
host: code.cs50.io
class: IN
ttl: 300
type: CNAME
target: cs50.dev