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88
Total
92
DNS
100
Email
65
Security
100
Network
92
Availability
Domainfacebook.com
IPv41
IPv61
MX records1
StatusActive
Domain technical report

Facebook

facebook.com

Generated: 2026-08-01T15:18:48-05:00 · Cached result

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IPv41
IPv61
MX1
NS4

DiagnosticsMain findings and recommendations

✓
Registro A disponible

1 dirección(es) IPv4.

✓
IPv6 disponible

1 dirección(es) IPv6.

✓
Servidores NS redundantes

4 servidores detectados.

✓
SPF publicado

v=spf1 redirect=_spf.facebook.com

✓
DMARC publicado

v=DMARC1; p=reject; rua=mailto:a@dmarc.facebookmail.com; ruf=mailto:fb-dmarc@datafeeds.phishlabs.com; pct=100

✓
DKIM detectado

El selector configurado responde.

i
SSL próximo a vencer

Quedan 8 días.

i
Faltan cabeceras de seguridad

2 cabecera(s) no detectada(s).

i
DNSSEC no configurado

No se encontraron registros DS ni DNSKEY.

✓
CAA configurado

El dominio limita qué autoridades pueden emitir certificados.

✓
PTR disponible

La primera IPv4 resuelve como edge-star-mini-shv-02-ord5.facebook.com.

i
Propagación inconsistente

Los resolutores públicos no entregan exactamente el mismo resultado.

i
BIMI no configurado

Es opcional y se utiliza para mostrar identidad visual en proveedores compatibles.

✓
MTA-STS publicado

v=STSv1; id=20191202T113700;

✓
TLS-RPT publicado

v=TLSRPTv1;rua=mailto:sts-reports@facebookmail.com

DNS and emailPublished records and email configuration

A

1 record(s)
157.240.254.35

AAAA

1 record(s)
2a03:2880:f175:181:face:b00c:0:25de

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 smtpin.vvv.facebook.com.

TXT

6 record(s)
"zoom-domain-verification=4b2ef4e1-6dee-4483-9869-9bef353fd147"
"google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s"
"google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA"
"google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY"
"facebook-domain-verification=y7isfmi3kzyg1r4wophh9vyb6pgbda"
"v=spf1 redirect=_spf.facebook.com"

NS

4 record(s)
b.ns.facebook.com.
a.ns.facebook.com.
d.ns.facebook.com.
c.ns.facebook.com.

SOA

1 record(s)
a.ns.facebook.com. dns.facebook.com. 4207849484 14400 1800 604800 300

CAA

1 record(s)
0 issue "digicert.com; account=271b0beda0771d006aa3a6c11b05187d456d6c239b46cb5241196095b09c92af"

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 redirect=_spf.facebook.com

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:a@dmarc.facebookmail.com; ruf=mailto:fb-dmarc@datafeeds.phishlabs.com; pct=100

DKIM

Selector default
t=y; k=rsa; p=;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Facebook
Description
Final URL
https://www.facebook.com/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.facebook.com/
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Sí
Issuer
DigiCert Inc
CN
*.facebook.com
Valid from
2026-05-10T19:00:00-05:00
Valid until
2026-08-09T18:59:59-05:00
Days remaining
8
Protocol
TLSv1.3
Cipher
TLS_CHACHA20_POLY1305_SHA256

Security headers

7 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
Referrer PolicyNot detected
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
—
Cross-Origin-Embedder-PolicyNot detected
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Review
!
Differences detected

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
57.144.204.1
46,25 ms
Cloudflare
1.1.1.1
57.144.204.1
19,06 ms
Quad9
9.9.9.9
57.144.104.1
24,02 ms
OpenDNS
208.67.222.222
57.144.204.1
34,84 ms
AdGuard
94.140.14.14
157.240.26.35
41,38 ms

IP, geolocation and ASNAssociated network information

157.240.254.35

Identified
success
Sí
country
United States
country_code
US
region
Illinois
city
Chicago
latitude
41.8755616
longitude
-87.6244212
asn
32934
organization
Facebook, Inc.
isp
Facebook, Inc.
timezone
America/Chicago

Visitor information

Visitor
ip
216.73.217.34
reverse
country
United States
country_code
US
region
Ohio
city
Columbus
latitude
39.9586885
longitude
-82.9986903
isp
Amazon.com, Inc.
organization
Anthropic, Pbc
asn
16509
timezone
America/New_York
browser
Otro
os
Otro
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Sí
cloudflare
No

SMTPEmail port connectivity

smtpin.vvv.facebook.com

Port 25: Closed/unreachable · 8.8 ms · 
Port 465: Closed/unreachable · 8.5 ms · 
Port 587: Closed/unreachable · 0.6 ms ·

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