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72
Total
85
DNS
70
Email
65
Security
85
Network
60
Availability
Domainlnkd.in
IPv41
IPv61
MX records3
StatusActive
Domain technical report

LinkedIn: Log In or Sign Up

lnkd.in

1 billion members | Manage your professional identity. Build and engage with your professional network. Access knowledge, insights and opportunities.

Generated: 2026-08-08T18:21:57-05:00 · Cached result

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IPv41
IPv61
MX3
NS8

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

8 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

3 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

42 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

!
HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: 14.32.211.130.bc.googleusercontent.com

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

!
HTTP response0 / 40 pts · Availability

HTTP/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
130.211.32.14

AAAA

1 record(s)
2600:1901:0:d5ad::

CNAME

0 record(s)
—

Not configured

MX

3 record(s)
10 mail-c.linkedin.com.
10 mail-d.linkedin.com.
10 mail.linkedin.com.

TXT

7 record(s)
"AFDVALIDATION=LinkedIn"
"CM-94033"
"56knd6gkhl82315qt77qgvmtwb149hhz"
"_wwbw1h78de5e0kgs9cq26eurbu67yov"
"1rnz0xkbmgwm1km8jg4802414n8ffv6q"
"v=spf1 -all"
"_qudegu7ve2p7h2g31ajv487ixwhf0vd"

NS

8 record(s)
ns4-42.azure-dns.info.
dns4.p09.nsone.net.
dns1.p09.nsone.net.
ns1-42.azure-dns.com.
dns2.p09.nsone.net.
ns3-42.azure-dns.org.
ns2-42.azure-dns.net.
dns3.p09.nsone.net.

SOA

1 record(s)
dns1.p09.nsone.net. hostmaster.linkedin.com. 1660171265 3600 600 604800 60

CAA

1 record(s)
0 contactemail "caarecordaware@microsoft.com"

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 -all

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:linkedin@rua.agari.com; ruf=mailto:linkedin@ruf.agari.com

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
LinkedIn: Log In or Sign Up
Description
1 billion members | Manage your professional identity. Build and engage with your professional network. Access knowledge, insights and opportunities.
Final URL
https://www.linkedin.com/
HTTP status
200

HTTP

Status
HTTP/2 403
Final URL
https://lnkd.in/
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
www.linkedin.com
Valid from
2026-03-18T19:00:00-05:00
Valid until
2026-09-19T18:59:59-05:00
Days remaining
42
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

0 active
—
HSTSNot detected
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
—
X-Frame-OptionsNot detected
—
Referrer PolicyNot detected
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
130.211.32.14
46,61 ms
Cloudflare
1.1.1.1
130.211.32.14
18,44 ms
Quad9
9.9.9.9
130.211.32.14
23,28 ms
OpenDNS
208.67.222.222
130.211.32.14
29,45 ms
AdGuard
94.140.14.14
130.211.32.14
75,43 ms

IP, geolocation and ASNAssociated network information

130.211.32.14

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

mail-c.linkedin.com

Port 25: Closed/unreachable - 1.2 ms - 
Port 465: Closed/unreachable - 4020.8 ms - 
Port 587: Closed/unreachable - 4005.5 ms -

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