Registro IPv4
host: chengduxinwen.com
class: IN
ttl: 300
type: A
ip: 50.3.253.16

Servidores DNS Principal (mname) y Secundario (rname)
host: chengduxinwen.com
class: IN
ttl: 1800
type: SOA
mname: alexis.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2340211190
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800