clu.nl

.nl crawl

First seen 2026-06-05 · Last seen 2026-06-05 · ok HTTP/1.1 200 2008 ms crawled 2026-06-05

NL · 185.104.29.172 · AS206281 Stichting DIGI NL

Reputation 87/100 weak security headers no dmarc policy

sector education type homepage

HTML metadata

Title

CLU – Leermiddelen Adviescentrum

Language

nl-NL

Generator

WordPress 7.0

Canonical

https://www.clu.nl/

Feeds

active last post 16 days ago

Technology

Server: Apache
CMS: WordPress 7.0
PHP: 8.3.24 security-only
jQuery: 3.7.1

Fonts

Google Fonts

Third-party hosts loaded (2)

fonts.googleapis.com×2
gmpg.org×1

Social

Contact

Email

secretariaat@clu.nl

Phone

06-23270703

DNS records live

NS

ns1.dn-s.nl
ns2.dn-s.nl
ns3.dn-s.nl
ns4.dn-s.nl

MX

10 mx01.hornetsecurity.com
20 mx02.hornetsecurity.com
30 mx03.hornetsecurity.com
40 mx04.hornetsecurity.com
50 clu-nl.mail.protection.outlook.com

Verified for

Microsoft 365

Email authentication weak

SPF: v=spf1 include:spf.protection.outlook.com -all
strict (-all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-02 to 2026-07-31

Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.clu.nl/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Links to (3)

Linked from (2)

Use this data via API

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