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Total

DNS

100

Email

Security

Network

100

Availability

Domainvu.nl

IPv41

IPv60

MX records1

StatusActive

Domain technical report

Vrije Universiteit Amsterdam

vu.nl

Vrije Universiteit Amsterdam, de brede inclusieve universiteit waar iedereen welkom is

Generated: 2026-08-09T01:23:49-05:00 · Cached result

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IPv41

IPv60

MX1

NS2

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

2 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 policy5 / 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-STS5 / 5 pts · Mail

Mail transport policy.

✓

TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

188 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

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/2 200

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

52.232.69.102

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

0 vu-nl.mail.protection.outlook.com.

TXT

20 record(s)

"cEePUaAdUpgbDwN8y+iChaM5q/fmwZ98byweLOwQQTzlfZ7ZqiRmUZy9plWcraR+SpUS7soZ99JhnT3uRkW0uA=="
"apple-domain-verification=CQxBk5H2cH0MlovF"
"Address: De Boelelaan 1105, 1081 HV Amsterdam"
"ZOOM_verify_gOlFjB0bTXauhCZZfZ0SZA"
"atlassian-domain-verification=4DKZByaje8L/OfqPKIBr9eFCxXWL7x17aQeSAH5OE0dv32q8PXT/ibb45DBX6h1T"
"successfactors-site-verification=NDVmYTkwNzVjMjQ3NDgwYTRiNTZiYjM4YWY0MjUwNjE4NDE1NzAyYjVkZDAxYzU4ZDBkNWNiMjg5OTFkYTYxYg=="
"bw=JD9O8B5T3N8rye1GFjQP5tlEtsH7SuVOiTWPxSNk67Kr"
"facebook-domain-verification=z5lo4vme7tj7rz0rkrjeyw3ficdkrt"
"Phone: +31 20 5985385"
"MS=ms11195063"
"OPE0067218"
"google-site-verification=5wBwCtzHALiL0eFj_8LfcLtC9A0pwqF8ChcfKHGWeUg"
"HO5Hae8DJUssBXMJPxF8SuoTVyO4suOdM/31NLC0WwA="
"HARICA-2AQWWJAqj5VSqkz0rOX"
"935e51b8-957b-486c-bca0-52db87534023"
"B8RKMH5ZV1ICEXRNIUXA04C1D4UXWARTPQE3T8PTL"
"v=spf1 include:_spf.vu.nl  include:spf.protection.outlook.com include:_spf.x-com.nl include:spf.coachview.net include:outboundmail.blackbaud.net ip4:194.150.14.85 include:spf.formdesk.com ip4:89.146.30.0/27 ip4:213.144.242.0/28 ~all"
"MS=ms33278211"
"Vrije Universiteit Amsterdam"
"jamf-site-verification=mTKqAuu3KFc2rfzUgyBWng"

NS

2 record(s)

new-ns2.vu.nl.
new-ns1.vu.nl.

SOA

1 record(s)

new-ns1.vu.nl. hostmaster.vu.nl. 2024274987 10800 1080 2419200 900

CAA

6 record(s)

0 issuewild "harica.gr"
0 issue "digicert.com"
0 iodef "mailto:socc@vu.nl"
0 issue "letsencrypt.org"
0 issue "pki.goog; cansignhttpexchanges=yes"
0 issue "harica.gr"

DS

2 record(s)

6004 8 2 00C977F596294AD09FAA33193439DBFD67CB0D24CF148692F051B247 F43B17B1
64997 8 2 C4E1C107050AB567DFC7D4BE773D06096C1A20598AFF4C1A978700EF 333C913B

DNSKEY

4 record(s)

257 3 8 AwEAAaY1MvssCMZgxBitAQ9CZ/9v7mQ4ydePrNjBWvKBrf7OQxHfKGbX Y5hhTIDDNFv/ZxZXga7mvFCot+XtRhZcuwjIr6o/5zo0s2UbykR9+KGr ZAXDestydId9XFvVU5fba8XpbAAobITmABnSuZOlVVSSlW+V/L+dL43b ThHPlmADZ7pGfMeUV7bhcetRKT5FuIMJTk9ruv0t6jUg+l4mtxH/symd hl52n5jQxxfs7ta93hGC2HCwtBuQ82p9afEKUT0Zc6Txw8DO441ErDdT w1lrxdfIy8uEMWAzVJUp5aeO7xGmf/ZdsOh+uHzRnqntlHcy6rutkXv4 5ygAmbTpcek=
256 3 8 AwEAAaBmz7nJsppO+w9L+y0EzTxe34LVTk/G55d8a1KTBAWwAw5m48op SpUoNCzqxA8T1tPEhTNy86buR5vopYtLXKwDRuuzkQSrWrdFRkN21T2Z /OGPtbE+PWmcnSec+1XVwpR4vRZNegmozO1AyEkj/T59sDMBU1jzEaPS gbwUAtd3
256 3 8 AwEAAa+wfd9By11L+3+S7vRHyCRIawC+uTjwjfwYrRNPsrM/cCdlM6Rg dW30XBzw4pMxy2dyienGVJLbkGi6/MekoS3ft7/EHE9Yis7GkdpBhH4o mTctDdEbKy4GLqd5QK/stlKx4KUfjJpNCj1yhZS/GtDIp5hGm7yv1d+b 0Id3Q/Az
257 3 8 AwEAAbehIeu/MrjMEEKyWKgRI9zlvd7nuGy5jo/e74H2CW3IH4wyRl+e YsznmX4ETZNxKT6UxyAQg/iqwgduztVxogtahj4hwvHRIYtug+o4vbU8 S4SIG9EPC8DNyRF92T9adpVLIpVz8hT7h5KVw40GeWfflBpHfPbF45Pi A0sKp8JEsyXmDtE8tSB9EzgqUmMJlUUiN00sOHaNreFrFzBg9m2V0pep NBgiQCLMfKBTEkQSiXNKeTsf3gjx/a0N+6HFu0tixBtaxs0i6MeA8/uG kIn2hDI6n1J6Kj7ow9ywlghL7+jJ1SQiPWdQLReUenYaWt/lQPR89XBC 5UjCXU5xO4M=

RRSIG

7 record(s)

DNSKEY 8 2 172800 20260812230613 20260808221809 6004 vu.nl. cd+3mVez0IK2RLeVghgaO6m3EuwT/0Kmc/bYMgU8SEHNkfSintJyiqL1 AeOvAgCuWAEnEF9D4TPP/ltdORcwOGVAZZp9zWEmNXvkgNkR2fzyZkkC U5zqoUb6fjk/1BmjEAHbyVg/n7/wPrN7PJ74owMyi6sskjWroLwmDHlZ ODLYqqSn2LrcKe6/PwrOvhvQpbngEFHCoPnQKLeWA5ZCoqUJ+MYqx6jP uIO/7QKOqbW1qplj4qjnA1Z+psz7nFMfLSPDKV9cDy2qjNB7B9XnoKxY Wo4m6QSgviJoDJWw9A8alN3mD5y+uk6470nX0NE6PI6+UJMpfuyaVtP5 pY0Q6g==
DNSKEY 8 2 172800 20260812230613 20260808221809 55425 vu.nl. g8H/GsxGcmFWxcMGI6A2dR2dY5GqH38PPYj2U4/9VWhDZzz6OulPNO2t RvwCxIsdqYHYLMheSP3c37h4Fg1mGQRTVSPo9Kes7BbHR+eLnowV/FSX 62rKXrpDUC0rSCHNvX0wOqj3S4PsNqkBLayFJIjo2dOSdqWOgoqeV8qt rLw=
DNSKEY 8 2 172800 20260812230613 20260808221809 64997 vu.nl. m3Yn8swQbVMK3goiLfINlP8qgKxq51VB94KMgEDlWJr3Y9jULhdXKt5v u0Tk4JWi2Dkmirp9rQOGAbdlHZmy4VnXzqDpbaguDHggAtVewpTCAWy2 egkwjfoUtWVsLYyHrh/ztfnJdU/gfKBGJTuO8pOblnmcieU6W5thBh8c ITN0AV9+UnHlOIWFiFfuQpcEmVEc8X7QGGWgqs7aBYqCABae9OpoMm2H 4gGXSVTjySktA5oFjSaS+fzDEEnq4OBwmApT8eGU7SvJ+pboHTlRqx40 lPpDO52Dji+B3yec/kZEItl6r+iF1raZzD3jTZ2HmvIZtmymx3ktFsZg Vviv9g==
TXT 8 2 60 20260812151915 20260808151617 55425 vu.nl. eOJWp1aITU3TeTn4ONlXNcPAEAgSNyrcnkgjaOxMEdzynTFvgBaCeXeH +UD+oXDWit6kcta0WDRA47xNg22r4ri/Lq2gtRk/xcPT6uZ5vnPwPRfk aWYism5C6weG2+qtBiO9ahJaIOfgO6GbsE77PHmxLjSoZYI3gYazQOJv 9hg=
NS 8 2 28800 20260812151915 20260808151617 55425 vu.nl. levpJhETl8k32IPV3TKllP708+StsTsu1y0hcEGR9w7rVFenQlM8Oj8s 3hidsnCCryEcb0t+PEIrY75YJWOjqVL0BDeWdhYyl4ge5OfpK1sm+hDc Ulc6zdK50u47HGwDBKWzvGLhCnnEM5GOvQx/etby/3E8GpNOqEx0Uqbh 8w0=
DS 13 2 3600 20260903124035 20260806200722 467 nl. FHn02XP/xHgjm8fTXLsAsAryptZk5+0ZWbQJ5RBd8IOLqzt56dD8Xwpe mKNDdk72rQkS+hvgUXPlXfh466Tqkg==
MX 8 2 86400 20260812150316 20260808150307 55425 vu.nl. Arb3i04Ccx1JPhrtSmHTVsAXY2MCOitpdmmtWMSxB2PPeQ/FivnNEucy 0QmbxfHKfFNasDw+lrMNY+MDm2Y0Xj56Qz1Ga4kiJngBN+aRcpK+I089 c6GA2WM3EqbLrA2xt34+isz3+Khma90zS/ns4vGEXThWfMePKI36RinM AsY=

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 include:_spf.vu.nl  include:spf.protection.outlook.com include:_spf.x-com.nl include:spf.coachview.net include:outboundmail.blackbaud.net ip4:194.150.14.85 include:spf.formdesk.com ip4:89.146.30.0/27 ip4:213.144.242.0/28 ~all

DMARC

Configured

v=DMARC1; p=quarantine; sp=quarantine; pct=100; rua=mailto:8e35bdd774d9724@rep.dmarcanalyzer.com; ruf=mailto:8e35bdd774d9724@for.dmarcanalyzer.com; fo=0:1:d:s;

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9Gsq/XPYYxdtfH4SUf/qsDtw3aB4Hfm7s2NOXDMA+4DUFxBO1Yg84aSgI2H2+ABxRo4fzPXig79aWQ+oG9lt05bY934fFTQOG+lNv5Kr6fXl5yaRvMDJek5srJynaLspxVt8PtEVPXl/zTyvgjvm1zb6Apjjp6N55Oegz/6CoJwIDAQAB; n=1024,1449226675,1465037875

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Vrije Universiteit Amsterdam

Description

Vrije Universiteit Amsterdam, de brede inclusieve universiteit waar iedereen welkom is

Final URL

https://vu.nl/nl

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://vu.nl/nl

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Hellenic Academic and Research Institutions CA

vu.nl

Valid from

2026-07-29T23:57:45-05:00

Valid until

2027-02-13T22:57:44-06:00

Days remaining

188

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

3 active

✓

HSTSImplemented

—

Content Security PolicyNot detected

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

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

52.232.69.102

173,21 ms

Cloudflare

1.1.1.1

52.232.69.102

170,60 ms

Quad9

9.9.9.9

52.232.69.102

143,68 ms

OpenDNS

208.67.222.222

52.232.69.102

360,31 ms

AdGuard

94.140.14.14

52.232.69.102

129,59 ms

IP, geolocation and ASNAssociated network information

52.232.69.102

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

vu-nl.mail.protection.outlook.com

Port 25: Closed/unreachable - 35.7 ms - 
Port 465: Closed/unreachable - 4017 ms - 
Port 587: Closed/unreachable - 4017.8 ms -

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