Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: foursquare.org
class: IN
ttl: 1800
type: A
ip: 141.193.213.11

Registro IPv4
host: foursquare.org
class: IN
ttl: 1800
type: A
ip: 141.193.213.10

Servidores DNS Principal (mname) y Secundario (rname)
host: foursquare.org
class: IN
ttl: 13193
type: SOA
mname: ns10.digicertdns.com
rname: dns.digicertdns.com
serial: 2009010138
refresh: 43200
retry: 3600
expire: 1209600
minimum-ttl: 180

Servidor de Correo
host: foursquare.org
class: IN
ttl: 1800
type: MX
pri: 0
target: foursquare-org.mail.protection.outlook.com

Información TXT
host: foursquare.org
class: IN
ttl: 1800
type: TXT
txt: 00d5f000008bu24eag
entries: Array

Información TXT
host: foursquare.org
class: IN
ttl: 1800
type: TXT
txt: MS=ms84810408
entries: Array

Información TXT
host: foursquare.org
class: IN
ttl: 1800
type: TXT
txt: MS=ms84805427
entries: Array

Información TXT
host: foursquare.org
class: IN
ttl: 1800
type: TXT
txt: l764eP6+DwbC3Cvzl44LrrfcLAKILUFmiX4ltbCpYIiBwilMg+V+AMhlPPpMZ5uAcdzJeHo495CgKQMPjN1BXQ==
entries: Array

Información TXT
host: foursquare.org
class: IN
ttl: 1800
type: TXT
txt: 95F27D8E09
entries: Array

Información TXT
host: foursquare.org
class: IN
ttl: 1800
type: TXT
txt: v=spf1 mx ip4:4.7.16.128/26 ip4:216.14.63.41/30 ip4:38.108.186.0/24 ip4:65.52.232.173 ip4:157.55.209.64 ip4:62.13.150.47 ip4:198.21.2.183 include:_spf.createsend.com include:spf.protection.outlook.com include:_spf.salesforce.com include:servers.mcsv.net ~all
entries: Array