donker.nl

.nl crawl

First seen 2026-05-11 · Last seen 2026-05-31 · ok HTTP/1.1 200 9966 ms crawled 2026-05-16

NL · 5.255.79.54 · AS50673 Serverius Holding B.V.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title

Specialist in brandstofleidingen en warmtewisselaars

Description

Just another WordPress site

Language

en-US

Generator

WordPress 4.7.29

Canonical

https://www.donker.nl/en/

Translations

Feeds

Open Graph

url: https://www.donker.nl/en/
title: Specialist in brandstofleidingen en warmtewisselaars
locale: en_US
site name: Donker Fuel
description: Wij leveren en repareren sinds 1996 hogedruk brandstofleidingen en warmtewisselaars. Neem contact met ons op voor maatwerkoplossingen en snelle service.

Technology

Server: nginx
CMS: WordPress

Analytics

Google Tag Manager

Fonts

Google Fonts

Social widgets

YouTube Embed

Third-party hosts loaded (5)

fonts.googleapis.com×4
donkerfuel.eyeonlinehosting.nl×1
s.w.org×1
www.googletagmanager.com×1
www.youtube.com×1

Social

DNS records live

NS

ns1.mijnwebsitehosting.nl
ns2.mijnwebsitehosting.nl

MX

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

TXT

v=verifydomain MS=ms26093104

Email authentication strong

SPF: v=spf1 mx a ip4:5.255.79.54 a:s20.mijnwebsitehosting.nl include:spf.protection.outlook.com -all
strict (-all)
DMARC: v=DMARC1; p=quarantine; adkim=s; aspf=s
policy: quarantine
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-04-28 to 2026-07-27

Expires in 57 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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