indexo.dev

delindenboom.nl

.nl crawl

First seen 2026-06-02 · Last seen 2026-06-02 · ok HTTP/1.1 200 1166 ms crawled 2026-06-02

US · 172.67.167.179 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
obs De Lindenboom | Openbaar onderwijs Zaanstad
Language
nl-NL
Generator
ZaanPrimair v.1.1
Canonical
https://www.delindenboom.nl/
Feeds

Open Graph

url
https://www.delindenboom.nl/
title
obs De Lindenboom
locale
nl_NL
site name
obs De Lindenboom
description
Openbaar onderwijs Zaanstad

Technology

CDN
Cloudflare
CMS
WordPress
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts
Third-party hosts loaded (12)
  • c0.wp.com×10
  • i0.wp.com×6
  • stats.wp.com×2
  • 0.gravatar.com×1
  • 1.gravatar.com×1
  • 2.gravatar.com×1
  • fonts.gstatic.com×1
  • s0.wp.com×1
  • v0.wordpress.com×1
  • widgets.wp.com×1
  • wp.me×1
  • www.googletagmanager.com×1

Contact

Phone

DNS records live

NS
  • norman.ns.cloudflare.com
  • reza.ns.cloudflare.com
MX
  • 0 delindenboom-nl.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication strong

SPF
v=spf1 a ip4:37.97.207.197 ip6:2a01:7c8:aac3:194:5054:ff:fed7:41b2 include:spf.protection.outlook.com include:spf.ziber.eu ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; adkim=s; rua=mailto:dmarc@232xxsh9.uriports.com; ruf=mailto:dmarc@232xxsh9.uriports.com; fo=1:d:s
policy: reject (enforced)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyiJNmMw266l9meP0xFqO/wiHDcuC/XSWODZNvE1CbXuH4izg0aXuxDzIkdvvZ/Sw0PGM90MOKQKYuS…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp3FFL2rnpkG1LyNDwRklffC7/LrETixoVqP/ALKy4289OBmA7mH0LwxEc8PC80E2Ey5A/ByBIMNzb3…
  • mail: v=DKIM1; h=sha256; k=rsa; p=MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2Bn8NHUaXt9arUO3DtX7aSMqTGHse6BP4voDkUgfMVZgg8qV8fTuaIXAc2drPlI0E2G5…
selectors probed

Certificate (current)

WE1
from 2026-04-08 to 2026-07-07
Expires in 32 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 90/100 Checked live page: https://www.delindenboom.nl/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
findings
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN
permissions-policy
geolocation=(), microphone=(), camera=()
x-content-type-options
nosniff
content-security-policy
default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://*.google-analytics.com https://*.googletagmanager.com https://*.wp.com https://*.gstatic.com https://maps.googleapis.com https://translate.google.com https://translate.googleapis.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https://*.wp.com https://translate.googleapis.com; img-src 'self' data: https:; font-src 'self' data: https://fonts.gstatic.com; frame-src 'self' https://*.youtube-nocookie.com https://*.youtube.com https://*.google.com https://*.google.nl https://translate.google.com https://forms.cloud.microsoft https://forms.office.com https://*.forms.office.com; connect-src 'self' https://maps.googleapis.com https://*.google-analytics.com https://*.googletagmanager.com https://*.wp.com; frame-ancestors 'self'; form-action 'self'; base-uri 'self';
strict-transport-security
max-age=15552000; includeSubDomains; preload

Links to (3)

Linked from (1)