Servidores DNS Principal (mname) y Secundario (rname)
host: startblueup.com
class: IN
ttl: 3600
type: SOA
mname: dns1.p01.nsone.net
rname: domains+netlify.netlify.com
serial: 1763388843
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: startblueup.com
class: IN
ttl: 3600
type: MX
pri: 20
target: mx2.improvmx.com

Servidor de Correo
host: startblueup.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mx1.improvmx.com

Información TXT
host: startblueup.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.improvmx.com ~all
entries: Array