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72
Total
85
DNS
90
Email
65
Security
50
Network
60
Availability
Domainuniversiteitleiden.nl
IPv41
IPv60
MX records1
StatusActive
Domain technical report

Home - Universiteit Leiden

universiteitleiden.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: 2026-08-09T04:41:25-05:00 · 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

181 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: p-lb-000636.infra.leidenuniv.nl

i
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 response0 / 40 pts · Availability

No successful HTTP response.

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
132.229.29.70

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
0 universiteitleiden-nl.k-v1.mx.microsoft.

TXT

6 record(s)
"v=spf1 include:_spf.xqueue.com ~all"
"HARICA-0McXXLaGRKvAAUnrbue"
"MHlhvquCdwRJRYkTS56GSEY+DQj+UiYMZF/IOe4KopQIx9o1tQw9R75rdXDd3wu3ipiXoQU024B59OvW9jAisw=="
"MS=ms50955834"
"facebook-domain-verification=i7dmrn8v3p50vcpvbklhh2imk6ghos"
"google-site-verification=lDW7ZJy_kHGpzCFC7kFYyj96huHupUonb0ytLJHIAdE"

NS

3 record(s)
ns2.surfnet.nl.
ns1.surfnet.nl.
ns3.surfnet.nl.

SOA

1 record(s)
arachne.leidenuniv.nl. postmaster.leidenuniv.nl. 2005223105 10800 1080 2592000 7200

CAA

0 record(s)
—

Not configured

DS

1 record(s)
56950 8 2 F5E07F2F335DE8F471534621FA42F829A3DC5ED582FE34AAC9408C47 AB8D76A4

DNSKEY

3 record(s)
256 3 8 AwEAAbt0uRl16wmk9LJg78M9+SahetfLGBNlDpkbrjHVNUEhJIxwSgTf ooNVcbJgvZWXYoAGorBqhx3Y0/Yk8v5pjkpGj6u5mJFkVmKgoxRpW4Bv O6iOawLIS459XCdB5p+DPS0HcQfnFFdRd9xuAd+v/FTz/BmeR2a5FOTc M++ZKYvR
256 3 8 AwEAAb2Sm6hgfWgSAnfbusoGWBlnque/xTmMShnbgPbIsr96J1md5VZg uTmFzzOkE6O9HgasSjSRTxXYJbiCroi5kken7M+4sbRokcaDxGAJ5JSt LeaD8yr4tLHUj36SCHqfmVEm0T0cOBbIoEFa24KdBWUIw+dvCZirdEU9 7w8azoDn
257 3 8 AwEAAa2PS83Sbou/n/kYPP6ATgbxieoud+RzxVe1LmGBujPCJzwgsCIc vneucn5xJtTIHzSQwKYBggpexUUjbmyWOP2l5XaIZSj2RxlxzLCSFb1L 8Qrmle2gef1bEY3Ve6Uw6DtD9lz+95lqKo2no3l3+rVBRkKrTF57sylz HCgfNQbCLAfdth3AIKiPx5qH3M0suvYXYzrIwocNHByewNlJwpGyJtbJ GfkLKvk9ryQ1j0G4A6LB+RD4D3tUrjIDRayT/LfbZvydMM5qMrpDzh52 gN4cJEXirA/WNc6/8ETysDfK55PhNKo+bm1gzZF4n62KuABFfPk4m27s VFtLupOEBc0=

RRSIG

9 record(s)
DNSKEY 8 2 172800 20260812095929 20260808095523 40308 universiteitleiden.nl. TCzXVhFbln+lyam1ZMnEZss1vhMTYmJlUnAmIBAjhMzHdQkWdYEvGkIi lMDyRVC0Xmx4kRxDinCvPSr3or++3+59YsqA9LaUnyDCIzNKRRF7nrBM vk317OSCESXMAGfB4iqYmVrtgEum/Slpa6269YrGj2RpL0xzZhT6DeH1 aEA=
DNSKEY 8 2 172800 20260812095929 20260808095523 56950 universiteitleiden.nl. KR/L9EquI4pEYFth5uyYEPeqkCmlYDx5uhgxfixpzRcrR9HdYdwgWyJD xiQOseuFzxi2Ddm41D/Lytu9Uabp4OMifxYEzjm+64Zdwc32GigE+Cp6 nPu+C6Mlh3p3fX0RcvhHnLoCnlUrzzsKhkjZWjtEzCA2P97IevAgxhOq ii50x7K2LNcQlIuR1bCn8WNitw3n3S5p7e6eq8BKrGZd+Q5mY+Uwzzgj UdVIvB5+48sB5cBvhAjwT1RSC8GBLdR8EwTUcUtoWvth068ilpcSdJ9q E8s7y+2l6f/ZYKX0SkSeXfFL0hE1dZ/CFzGzF1nLytPOKws6sd1A0VXv s2YeqQ==
MX 8 2 28800 20260812235359 20260808234826 40308 universiteitleiden.nl. T48GjkCMLVFOtANQ6WHPZUhk/3dMH/HNzexbBQIWcfBCakOqy+AJaWrV cs4/n11rK3iW9mK8H40Ezl4MNu2m4KP3PAU5ksSmU50ar/wppdUHZ9rn OjH3j9rEo3niDtmzCWDeVPteuRsCrtVpoLduhOSFBQONSdCrYMtJ6XZy m7A=
NS 8 2 28800 20260813005110 20260809000646 40308 universiteitleiden.nl. oJl+fHcCDLY5Tu5TmnE53RFfeLXMpz1WglJnPqe7ffZgGwVytznCz/4j H/M3SK9X01RBaezkV0lp8xYQ9kxJcrnFXw+MI74FRGz2L/4iAdkfZxQC O9q3nodcU3iWsNvlqkuRGb9ts7qWuW9/wYPw66jc6y7HaEi8PorW8fOi t7s=
NSEC 8 2 7200 20260813005110 20260809000646 40308 universiteitleiden.nl. go7Tu/5l2v24uk3yNruT66gv7t9oYBAVZMBOlBlTnSvZmF4r0uDv2Xan yyPHHgoC2JvW9a0w5hOK98BiEzt9KymOzCEiRHUK1t247fjAjkIMC+0v L1BQTi5EMuUu96BiAWU+mIhA1PggCDNk/HpCRkNYkUM+ZJgkD8A/d77M mek=
TXT 8 2 300 20260813005110 20260809000646 40308 universiteitleiden.nl. su2CEWVgMR/w6u3bpOY2IsnPwZ0Xohdk2VP0mALEJsu1ZQqSrnCgobrO rWhUdGSAFNwmFrziXduae432Crc0fuFdnY/9qqAhHYpbGmynaAdPhIcY G9ZG4n1rkr60/RjBUlVIy8SZ7yGR/2zqQSBbRRuJUJJQXVPSCRF8KDy4 Yhk=
A 8 2 300 20260813023113 20260809014408 40308 universiteitleiden.nl. BQo1xPxGGvCU/icO5RXIvbLSg+R/zBWHV5yTq2l2AI8j4ULgJsyFFCNq GevuRUlZRyfy7UPXjJNSIJtTZVw0zBnJ7FlIM1fAJu8Xfen3tQ9108tt tMpZnCi7FfEw+ACVzqz3emsPplwUhpIRH0gJGNGcXoiFMEDkIpOTqyz9 XCI=
SOA 8 2 28800 20260813060010 20260809050010 40308 universiteitleiden.nl. gV/xg0/Z3VUPvxnc7aRoBLBaikSYbI6knGjYQVMt/FmiWIztuzLVu3c7 6fUWdjm7vCgsaYeUCTUTyS4H93RCpEwOMrKiQX+Hl6lqRPpn9/oj41ri N9BQBe+zHuU9uASmCMuIOkEbIe3pg3b24Aehz0TRYc9TP+0L+ochTU6J trU=
DS 13 2 3600 20260904030349 20260807050721 467 nl. XOYEn9r8Eb2RbknVv9qsGBCXXOZ0psoGY+VmgurzzFL5/X3pwYjA+t+m RAyJCTfy1WRQJiU0x6Is+cLkz78N5w==

NSEC

1 record(s)
_dmarc.universiteitleiden.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.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 selector2
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2gC/oD867/dHAqoMvSLIjbE2OewxcqPbgvCBHPvkw46tgAu3N1MMGKiiI9f+1vjU7iQhUUtGzgkTCuF5vxjDwo+Nd1yRcDf6mxUB62jBCeVknsl+sPTZuFeRvVPFcwZ9Bhl/NhMq3Mztz88IO8mfaEifGGHPzElaKWQV0BH15qvuTAorFItURAJAVH7+PJW0FIj8O0K8NXGme+BvJUTJLkcTuwW85z9WCPbIDSwTJ4S4ycf3woZixPJrRuxmIGEz97Jb0CHZ6RS0rWHbgFMRcIIeZJCb+/RBWrm/coDXoES6XoydxTyMTip/EWNgl+8ItGqT2+llXSJ2e8nQcqCnHQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Home - Universiteit Leiden
Description
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.
Final URL
https://www.universiteitleiden.nl/
HTTP status
200

HTTP

Status
Final URL
https://www.universiteitleiden.nl/
Version
2
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
www.universiteitleiden.nl
Valid from
2026-07-22T11:34:18-05:00
Valid until
2027-02-06T10:34:17-06:00
Days remaining
181
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
132.229.29.70
143,51 ms
Cloudflare
1.1.1.1
132.229.29.70
247,71 ms
Quad9
9.9.9.9
132.229.29.70
146,12 ms
OpenDNS
208.67.222.222
132.229.29.70
232,73 ms
AdGuard
94.140.14.14
132.229.29.70
236,29 ms

IP, geolocation and ASNAssociated network information

132.229.29.70

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

universiteitleiden-nl.k-v1.mx.microsoft

Port 25: Closed/unreachable - 18.5 ms - 
Port 465: Closed/unreachable - 4021.1 ms - 
Port 587: Closed/unreachable - 4036 ms -

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