indexo.dev

leren.nl

.nl crawl

First seen 2026-05-24 · Last seen 2026-05-31 · ok HTTP/1.1 200 3643 ms crawled 2026-05-29

NL · 136.144.176.249 · AS20857 Signet B.V.

Reputation 62/100 wrong cert weak security headers no dmarc policy

sector education type homepage

HTML metadata

Title
Wat wil jij leren?
Description
Online cursussen en duizenden kennisbronnen over allerlei onderwerpen.

Technology

Server
Apache
Analytics
  • Google Tag Manager
Ads
  • Google AdSense

Third-party hosts loaded (5)

  • www.applinet.nl×2
  • www.google.com×2
  • pagead2.googlesyndication.com×1
  • wang.applinet.nl×1
  • www.googletagmanager.com×1

Registration

Registrar
Realtime Register
Created
1999-07-06
Updated
2024-02-06
Name servers
  • ns2.argewebhosting.com
  • ns3.argewebhosting.nl
  • ns1.argewebhosting.eu

DNS records live

NS
  • ns1.argewebhosting.eu
  • ns2.argewebhosting.com
  • ns3.argewebhosting.nl
MX
  • 10 mail.applinet.nl
  • 20 fallback1.mx.nxs.nl
Verified for
  • Google

Email authentication weak

SPF
v=spf1 a:mail.applinet.nl ip4:194.165.34.0/24 include:_spf.argewebhosting.nl -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current) wrong cert

R13
from 2026-04-06 to 2026-07-05
Expires in 34 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (1)

Linked from (2)