theorie-leren.nl

.nl crawl

First seen 2026-05-21 · Last seen 2026-05-30 · ok HTTP/1.1 200 512 ms crawled 2026-05-27

NL · 185.233.175.236 · AS204983 Cyberfusion B.V.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: Theorie Examen Oefenen (2026) bij de #1 van Nederland!
Description: Theorie Leren doe je bij theorie-leren.nl, onderdeel van VekaBest. Wij zijn de grootste theorie opleider van Nederland. Al 4 miljoen geslaagden!
Language: nl-NL
Generator: WordPress 6.9.4
Canonical: https://theorie-leren.nl/

Open Graph

url: https://theorie-leren.nl/
title: Theorie Examen Oefenen (2026) bij de #1 van Nederland!
locale: nl_NL
site name: theorie-leren.nl
description: Theorie Leren doe je bij theorie-leren.nl, onderdeel van VekaBest. Wij zijn de grootste theorie opleider van Nederland. Al 4 miljoen geslaagden!
updated time: 2026-05-04T06:56:18+00:00

Technology

Server: Apache
CMS: WordPress 6.9.4
jQuery: 3.7.1

Analytics

Google Tag Manager

Third-party hosts loaded (3)

gmpg.org×1
static.klaviyo.com×1
www.googletagmanager.com×1

Social

Contact

Email

Phone

0402140080

DNS records live

NS

nsauth0.cyberfusion.nl
nsauth1.cyberfusion.nl
nsauth2.cyberfusion.nu

MX

1 smtp.google.com

Verified for

Google

Email authentication partial

SPF

v=spf1 include:_spf.cyberfusion.nl _spf.google.com ~all

softfail (~all)

DMARC

v=DMARC1; p=none; sp=quarantine

policy: none (monitoring only) · sp=quarantine

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7VAvLRGiIe4Q+X4AfpZH0YwiJhltgyKHizRwAmsrhheI9T9WLgEkK+oG/Z5Y5l+RWnVkMQ/pWmqtNW…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1RWNFsvYPIsrXUgNbKJb4Bo+yidLEMTsMJ5D9oX1vZrKbXnkZhGj/9I/32mkAz+dvVU7a/oeFI16ys0/bR…
s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDql2Sc1CNOV3XrXg5KFftQQT4fnaPLHg/HbZEo9MppDixRpcCYUwJYXSX/1tczr5GJlZmRAaYrSgLeERuI1f038+…

selectors probed

Certificate (current)

from 2026-04-16 to 2026-07-15

Expires in 45 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://theorie-leren.nl/

findings

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