indexo.dev

van12tot18.nl

.nl crawl

First seen 2026-06-05 · Last seen 2026-06-05 · ok HTTP/1.1 200 275 ms crawled 2026-06-05

US · 104.21.20.122 · AS13335 Cloudflare, Inc.

Reputation 94/100 dmarc monitor-only

sector education type homepage

HTML metadata

Title
Van12tot18 | Voortgezet onderwijs en mbo: artikelen en inzichten voor…
Description
Van12tot18 biedt artikelen en inzichten over voortgezet onderwijs en mbo. Voor leraren en schoolleiders die hun onderwijs willen verbeteren.
Language
nl
Generator
SEOmatic
Canonical
https://van12tot18.nl/

Open Graph

url
https://van12tot18.nl/
title
Voortgezet onderwijs en mbo: artikelen en inzichten voor leraren |…
locale
nl
see also
https://www.linkedin.com/in/renskevalk/
site name
Van12tot18
description
Van12tot18 biedt artikelen en inzichten over voortgezet onderwijs en mbo. Voor leraren en schoolleiders die hun onderwijs willen verbeteren.

Technology

CDN
Cloudflare
jQuery
3.6.0
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts
Third-party hosts loaded (8)
  • cdnjs.cloudflare.com×4
  • fonts.googleapis.com×2
  • unpkg.com×2
  • cdn.jsdelivr.net×1
  • code.jquery.com×1
  • fonts.gstatic.com×1
  • kit.fontawesome.com×1
  • www.googletagmanager.com×1

Social

Contact

Address
Grote Voort 247, 8041 BL, Zwolle, Overijssel, Nederland

DNS records live

NS
  • guy.ns.cloudflare.com
  • linda.ns.cloudflare.com
MX
  • 0 van12tot18-nl.mail.protection.outlook.com
TXT
  • mandrill_verify.tIfpANM8dJQYUH4yuEkEpA
Verified for
  • Microsoft 365

Email authentication partial

SPF
v=spf1 include:spf.protection.outlook.com include:spfa.mailendo.com -all
strict (-all)
DMARC
v=DMARC1; p=none; rua=mailto:c654da58188e4d9cb115e25abc5377c0@dmarc-reports.cloudflare.net
policy: none (monitoring only)
DKIM
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

WE1
from 2026-05-07 to 2026-08-05
Expires in 56 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 100/100 Checked live page: https://van12tot18.nl/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
Header values
referrer-policy
same-origin
x-frame-options
SAMEORIGIN
permissions-policy
accelerometer=(), autoplay=(), camera=(), cross-origin-isolated=(), display-capture=(), document-domain=(), encrypted-media=(), fullscreen=(), geolocation=(), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), usb=(), web-share=(), xr-spatial-tracking=(), clipboard-read=(self), clipboard-write=(self), gamepad=(), hid=(), idle-detection=(), serial=(), window-placement=()
x-content-type-options
nosniff
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=63072000

Links to (2)

Linked from (1)

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