Registro IPv4
host: urlcost.com
class: IN
ttl: 3600
type: A
ip: 167.172.228.26

Servidores DNS Principal (mname) y Secundario (rname)
host: urlcost.com
class: IN
ttl: 360
type: SOA
mname: ns1.clksite.com
rname: admin.urlcost.com
serial: 2026040801
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 3600