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Total

DNS

Email

Security

Network

100

Availability

Domainleidenuniv.nl

IPv41

IPv60

MX records1

StatusActive

Domain technical report

Home - Universiteit Leiden

leidenuniv.nl

De Universiteit Leiden is een internationaal georiënteerde universiteit met een breed palet aan talentgericht onderwijs voor goede en gemotiveerde studenten, dat wordt geïnspireerd door wetenschappelijk onderzoek.

Generated: 2026-08-09T10:08:16-05:00 · Cached result

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IPv41

IPv60

MX1

NS3

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

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

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

✓

DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

1 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

180 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers19 / 35 pts · Security

5 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: p-issc-019337.infra.leidenuniv.nl

IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓

HTTP response40 / 40 pts · Availability

HTTP/1.1 200 OK

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

132.229.92.45

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

0 leidenuniv-nl.i-v1.mx.microsoft.

TXT

9 record(s)

"HARICA-ehgKDPgNzU37hLkFEPx"
"LuxpAY9f1zHG+roggcfr/cQOl6j84tYnWmJzw31qbRvLZPcFFzI3jfxGDfvQoO3z1hF3lEqnh9b9qLbKpXZv5Q=="
"d365mktkey=3z9lonpthcf1flukxh42x2sxz"
"v=spf1 include:_spf.smtp.leidenuniv.nl ip4:87.195.18.70 include:spf.faqtory.nl include:_spf.saasplaza.com mx:nroute.de include:a._spf.brightspace.com ip4:34.245.210.0/24 include:spf.eprov.nl ip4:62.112.224.215 include:_spf.xqueue.com ~all"
"atlassian-domain-verification=SEecVMD3wHtwB7axKLBXdfoLHrVbpxrCISGbVwyvJbEoGUhC39wRZFkCo7tK5LRb"
"v=easydus; cg=11698f98-660d-4493-8a08-dc3fd7140b37"
"atlassian-domain-verification=flFJhiK3/jjJkNXwKznhyRJ6conPD48u57e5kKAXkkOa38lzTLjV8jwiKJyHBkn4"
"MS=ms65516456"
"MS=ms83046425"

NS

3 record(s)

ns2.surfnet.nl.
ns3.surfnet.nl.
ns1.surfnet.nl.

SOA

1 record(s)

arachne.leidenuniv.nl. postmaster.leidenuniv.nl. 2006822101 10800 1080 2592000 7200

CAA

0 record(s)

—

Not configured

DS

1 record(s)

46225 8 2 E908988B96D65064EDA53E879AB32205647813BB26133BC2AE67F392 7CAA92CA

DNSKEY

3 record(s)

257 3 8 AwEAAa/Hi8+50jphZzlGanbDr3T6ZK4xDt37abP79ItHTkRY1FxeLrwY uC0TvkFqXk4ldnd6aSwCQsuGCZWMiV0OyRBDmQu5G9lTqmLCTX0+B5Lv 9ymFGULdlIlwgIurrvSihcu4EKmG/l+DI2FH5N8i+5cGAe6nqT7bKCRs KRpoNdrZjTTbdlMmsOlTiS3pzWEz1beNaltCCOh5HBMmZBFcrQjBilpu OAr0KS7qmcuP5o+JPLYY1BmlpO+eludbZDDPmpxpGoMUdtLv4edw0x6z IeaElP5xrWonlI7TM2twO+5idYB5UR3YhlpYObYIVo064ESaia26jnxA Rx9ppALlE6c=
256 3 8 AwEAAcTvou6x29H3DXcW/0HkVoXB8C7wwoslYtaY8NuppysaTewmf1wo /yLChstMe/8rl0LP4pP7s8FrlDeQK+E7tmhn2UfBzhuJJVopVpr188Z3 11+it4xZPeiTDizajidnQa5ecDipWyA4xkX80LbDvr28Lg7SH99+L4wy OLnCh7g5
256 3 8 AwEAAdDizvW2YW6jIF4K2vw4gvzU0GvAoPpQzjbUVHaFpptv2ak3x6MO rHYd0Dx+hO+MBNZ2KLY6K4pLIjAR9sejZp+LhaNIQwPRI+VGR2cyHklV gteW2HPwwtaoZ5aqAc/z/DeKq/IO1d2KD9X9tVgb8G/WZIcGKSTPNt+2 PjjP9Jnt

RRSIG

4 record(s)

NS 8 2 28800 20260813025417 20260809022954 47949 leidenuniv.nl. Ytvb+myR9ry3iw3dbtZPJYZWNggE5aI7fr2qfJSQZLxkf3BiQ7Ajs3TR COl87fzr8CtTRWJDiPtBZcWZkxtEVLXDF6FkbdVpyaNIJCBtyzIIp5Uq tWCDyZl2qMbGiyHM5V5GsFEln6hUJ+KT/ulq+KqTk+X32o7YgZ1JBMkQ xLQ=
TXT 8 2 300 20260813004826 20260809001645 47949 leidenuniv.nl. vzf/iSqcA7xYgpz0HHw3wxBpJJ1QSPN6tKpvzI0QzwZmv8wVxDXg9XF0 pxf4v9SwNu3JXuVA/vHB8mn4V2tVED8QMcNKywwTFPSys8RWHgXwAu4e AXHUNDcOdFL0CEHGpXwEs9eWUSyD/uY+MoeYXZACQBilCgSfl9bZK2CJ VJE=
MX 8 2 28800 20260813022009 20260809015045 47949 leidenuniv.nl. Zw0h7gFiBxSOc3HUKzgoZbHKn9nVtKOvuq2Vg+X8ErjrxPpMVGv6gBtu Fx0Ed6dYyR94ZfJr9Fii5hWFZ5c/GMv80CJvFNUrg6QHcBwO1qfrnMuk pKMIXw3Pp63D1NCGFZz/N4YtAD0qRVxMgffZHVq8ztj/lBmOZ4m+EVnW NmQ=
DS 13 2 3600 20260905202754 20260809040928 467 nl. qYxy1yUyuncya2nlttsRq64qDmH85OFVkze8HlD1XqiRAxkqDkAWj73X LHwgr3zOYNKKAqQhpDhoiIdzIDx8Ng==

NSEC

1 record(s)

www.busing.\032fsw.leidenuniv.nl. A NS SOA MX TXT RRSIG NSEC DNSKEY

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 include:_spf.smtp.leidenuniv.nl ip4:87.195.18.70 include:spf.faqtory.nl include:_spf.saasplaza.com mx:nroute.de include:a._spf.brightspace.com ip4:34.245.210.0/24 include:spf.eprov.nl ip4:62.112.224.215 include:_spf.xqueue.com ~all

DMARC

Configured

v=DMARC1; p=quarantine; pct=100; sp=quarantine; fo=1; ri=86400; rua=mailto:dmarcreportsrua@issc.leidenuniv.nl; ruf=mailto:dmarcreportsruf@issc.leidenuniv.nl

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3iRBMsRs8E8C4xXmKYA8m41mFZD4iog/XvCKq282O0chWrDaeSRKPP+4AFePQNIFHd7885hSqt/R2k+gKmgA0y4FAjdcRlpghIKNelDZRpe+8epFbAdpPIyXHjLjXSmaZCljN9+EoW+t80YmnWgZZ0xUC0HWITvxPBJhBdR3OqgnOnVMA9knAljQ5YU3JrKxFzsjM8yQoxLO7E/ev/WpR6UpPafhSq7R6Y3N+7EXgfVEwOf6wbde+ngym3OsOtw2kdG9BJbKxREMHIEiKGwIImyQUGd+3CeWMaF9S3bnsJ5VJ8LrW0TEwPv69Afv79g5RT1JDLjLgJ6o/JN4LwRzZQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Home - Universiteit Leiden

Description

Final URL

https://www.universiteitleiden.nl/

HTTP status

200

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://www.universiteitleiden.nl/

Version

Server

Apache/2

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Hellenic Academic and Research Institutions CA

leidenuniv.nl

Valid from

2026-07-22T01:20:42-05:00

Valid until

2027-02-06T00:20:41-06:00

Days remaining

180

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

5 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

—

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

132.229.92.45

164,71 ms

Cloudflare

1.1.1.1

132.229.92.45

260,97 ms

Quad9

9.9.9.9

132.229.92.45

166,25 ms

OpenDNS

208.67.222.222

132.229.92.45

142,11 ms

AdGuard

94.140.14.14

132.229.92.45

158,87 ms

IP, geolocation and ASNAssociated network information

132.229.92.45

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

leidenuniv-nl.i-v1.mx.microsoft

Port 25: Closed/unreachable - 18.2 ms - 
Port 465: Closed/unreachable - 4020 ms - 
Port 587: Closed/unreachable - 4028 ms -

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