Registro IPv4
host: a1books.com
class: IN
ttl: 17438
type: A
ip: 185.53.177.31

Servidores DNS Principal (mname) y Secundario (rname)
host: a1books.com
class: IN
ttl: 3039
type: SOA
mname: NS19.WORLDNIC.com
rname: namehost.WORLDNIC.com
serial: 125120222
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600