Servidores DNS Principal (mname) y Secundario (rname)
host: epubreader.info
class: IN
ttl: 4365
type: SOA
mname: dns1.bigrock.in
rname: isonlivinder.gmail.com
serial: 2025062507
refresh: 7200
retry: 7200
expire: 172800
minimum-ttl: 38400