Registro IPv4
host: booklink.me
class: IN
ttl: 300
type: A
ip: 173.242.117.74

host: demo.booklink.me
class: IN
ttl: 300
type: CNAME
target: booklink.me

Servidores DNS Principal (mname) y Secundario (rname)
host: booklink.me
class: IN
ttl: 1800
type: SOA
mname: alina.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2373875273
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800