rug.nl

.nl crawl dns

First seen 2026-05-11 · Last seen 2026-05-17 · ok HTTP/1.1 200 7743 ms crawled 2026-05-16

NL · 129.125.2.51 · AS1103 SURF B.V.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title

Top 100 University | University of Groningen

Description

The University of Groningen has a high reputation for academic teaching and research and a large international network and offers degree programmes at Bachelor, Master and PhD levels in virtually every field.

Language

Translations

Open Graph

url: https://www.rug.nl/
title: University of Groningen - Top 100 University
site name: University of Groningen
description: The University of Groningen has a high reputation for academic teaching and research and a large international network and offers degree programmes at Bachelor, Master and PhD levels in virtually every field.

Technology

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

DNS records live

NS

dns1.rug.nl
dns2.rug.nl
dns3.rug.nl
ns1.surfnet.nl
ns2.surfnet.nl

MX

10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com

TXT

Show 7 TXT records

MS=ms97484282
google-site-verification=LzOS5q7nSbDRZFZ0FMFKbWSvsfDE8bL861TAh-czT7k
HARICA-iXUSYZelD4KghRtTA8V
bw=7iePWW2zaVtqaRhZZjRWUu985gQ1Ia26nUAJ3BDXMYBp
University of Groningen
mistral-domain-verification=139d17efc022c67581effa2fc6e0bb747d0c9456
google-site-verification=pMjlXqlOTWrDjxV9AoW_MGyuGOV3lEAsQ7__vv525Ag

Email authentication partial

SPF

v=spf1 include:spf1.rug.nl include:spf2.rug.nl include:spf3.rug.nl include:spf4.rug.nl ~all

softfail (~all)

DMARC

v=DMARC1;p=none;pct=100;rua=mailto:rugmail@rug.nl,mailto:c4b0a07195@rua.easydmarc.eu;ruf=mailto:mwbeheer@rug.nl;fo=1

policy: none (monitoring only)

DKIM

k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu+HaJKolJPGqBWpdkh3GhsCmnc7+qn9Swez2FQtaBEZz/OJU9c/W7XjCf6W2/ppSjanKY4Srdcp4XkAJ0/…
s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDNWjDMOkXHCtaAuyTiTDvWGoobhCYEMrnvmNO3qU0jb2R9GO9iPasjR4uV5CCustmcI1atGLd/qDsqglEIkyAl1K…

selectors probed

Certificate (current)

GEANT TLS ECC 1

from 2025-12-01 to 2026-12-01

Expires in 196 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://www.rug.nl/

present

strict-transport-security
content-security-policy
x-frame-options

findings

missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: SAMEORIGIN
content-security-policy: frame-ancestors 'self' https://student.portal.rug.nl https://myuniversity.rug.nl; object-src 'none';
strict-transport-security: max-age=31536000