Registro DMARC
v=spf1 include:sendgrid.net ~all

Registro IPv4
host: northbostonhomesearch.com
class: IN
ttl: 155751
type: A
ip: 204.232.141.225

Servidores DNS Principal (mname) y Secundario (rname)
host: northbostonhomesearch.com
class: IN
ttl: 155750
type: SOA
mname: ns1.p02.dynect.net
rname: hostmaster\@boomtownroi.com
serial: 12
refresh: 3600
retry: 600
expire: 604800
minimum-ttl: 21600

Información TXT
host: northbostonhomesearch.com
class: IN
ttl: 155750
type: TXT
txt: v=spf1 include:sendgrid.net ~all
entries: Array