Registro IPv4
host: usb-krd.ru
class: IN
ttl: 7200
type: A
ip: 127.0.0.1

Servidores DNS Principal (mname) y Secundario (rname)
host: usb-krd.ru
class: IN
ttl: 3600
type: SOA
mname: ns1.sprinthost.ru
rname: admin.sprinthost.ru
serial: 2026060400
refresh: 14400
retry: 7200
expire: 1209600
minimum-ttl: 86400