indexo.dev

onderwijsblad.nl

.nl crawl

First seen 2026-05-31 · Last seen 2026-06-05 · ok HTTP/1.1 200 279 ms crawled 2026-06-01

NL · 195.140.240.107 · AS41960 Nextpertise B.V.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Het Onderwijsblad-archief van de AOb
Description
Zoek in meer dan 600.000 artikelen uit twintig jaar Onderwijsblad, ht toonaangevende tijdschrift over onderwijs
Language
nl

Technology

Server
Microsoft-IIS
jQuery
3.3.1 known XSS (<3.5)
Fonts
  • Google Fonts

Third-party hosts loaded (3)

  • ajax.googleapis.com×1
  • fonts.googleapis.com×1
  • fonts.gstatic.com×1

Social

Contact

Email
Phone

DNS records live

NS
  • nameserver.co
  • nameserver.lt
  • nameserver.nl
  • nameserver.tl
MX
  • 10 mx.filtercluster.com
  • 20 fallbackmx.filtercluster.com
TXT
  • x0lwrj4wyd121586s96dlfvnvm5f4h83

Email authentication weak

SPF
v=spf1 a:mx10.filtercluster.com a:mx20.filtercluster.com a:mx30.filtercluster.com a:mx50.filtercluster.com -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2025-10-22 to 2026-11-02
Expires in 144 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (6)

Linked from (2)

Use this data via API

Everything on this page for onderwijsblad.nl is available as JSON from the indexo.dev REST & MCP API.

curl "https://indexo.dev/api/v1/domains/onderwijsblad.nl" \
  -H "X-API-Key: idx_..."

Read the docs & get a free key →