indexo.dev

duisenburghacademy.nl

.nl crawl

First seen 2026-06-01 · Last seen 2026-06-02 · ok HTTP/1.1 200 974 ms crawled 2026-06-01

NL · 45.82.188.175 · AS31477 Duocast B.V.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Duisenburgh Academy
Language
nl-NL
Generator
WordPress 7.0
Canonical
https://duisenburghacademy.nl/
Feeds

Technology

Server
LiteSpeed
CMS
WordPress 7.0
PHP
8.3.31 security-only
jQuery
3.7.1
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×2
  • gmpg.org×1

DNS records live

NS
  • ns.puffinonline.be
  • ns.puffinonline.de
  • ns.puffinonline.eu
  • ns.puffinonline.net
  • ns.puffinonline.nl
MX
  • 0 duisenburghacademy-nl.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication partial

SPF
v=spf1 a include:spf.protection.outlook.com include:spf.svsict.nl -all
strict (-all)
DMARC
v=DMARC1;p=none;
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqczgTJPD93/UDpYvFW1ey2SZ+vTrMCY6H01lluKoF3I4x319f0cQGHkKVJmQgmoSDI/X1DTCZf8aN4…
selectors probed

Certificate (current)

R13
from 2026-05-16 to 2026-08-14
Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked live page: https://duisenburghacademy.nl/

present
  • permissions-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
Header values
permissions-policy
private-state-token-redemption=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com"), private-state-token-issuance=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com")

Links to (1)

Linked from (2)