Registro IPv4
host: igc.hk
class: IN
ttl: 3600
type: A
ip: 45.113.121.87

Servidores DNS Principal (mname) y Secundario (rname)
host: igc.hk
class: IN
ttl: 1800
type: SOA
mname: NS9.HKDNR.NET.hk
rname: HOSTMASTER.HKDNR.NET.hk
serial: 2017147588
refresh: 5400
retry: 1800
expire: 3600000
minimum-ttl: 1800