Registro IPv4
host: herokuapp.com
class: IN
ttl: 8
type: A
ip: 54.159.137.28

Registro IPv4
host: herokuapp.com
class: IN
ttl: 8
type: A
ip: 54.163.99.142

Servidores DNS Principal (mname) y Secundario (rname)
host: herokuapp.com
class: IN
ttl: 10
type: SOA
mname: dns1.p03.nsone.net
rname: hostmaster.nsone.net
serial: 1661190037
refresh: 600
retry: 900
expire: 1209600
minimum-ttl: 10