Registro IPv4
host: 21stcenturylasercenter.com
class: IN
ttl: 300
type: A
ip: 104.21.15.181

Registro IPv4
host: 21stcenturylasercenter.com
class: IN
ttl: 300
type: A
ip: 172.67.163.191

Servidores DNS Principal (mname) y Secundario (rname)
host: 21stcenturylasercenter.com
class: IN
ttl: 1800
type: SOA
mname: andronicus.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2415864689
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800