Registro IPv4
host: eastu.com
class: IN
ttl: 600
type: A
ip: 121.46.248.140

Servidores DNS Principal (mname) y Secundario (rname)
host: eastu.com
class: IN
ttl: 3600
type: SOA
mname: ns3.01isp.com
rname: admin.now.cn
serial: 2025112001
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600