Registro IPv4
host: istanbuls.net
class: IN
ttl: 90
type: A
ip: 2.57.91.91

Servidores DNS Principal (mname) y Secundario (rname)
host: istanbuls.net
class: IN
ttl: 3600
type: SOA
mname: ns1.dns-parking.com
rname: dns.hostinger.com
serial: 2026052101
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 600