indexo.dev

prooleiden.nl

.nl crawl

First seen 2026-06-04 · Last seen 2026-06-05 · ok HTTP/1.1 200 76 ms crawled 2026-06-04

US · 104.18.211.89 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Stichting PROO Leiden | Onderwijs met aandacht voor elkaar!
Description
Met 530 medewerkers is PROOLeiden-Leiderdorp de grootste stichting (werkgever) voor primair onderwijs in Leiden en Leiderdorp.
Language
nl-NL
Feeds

Open Graph

url
https://prooleiden.nl/
title
Stichting PROO Leiden | Onderwijs met aandacht voor elkaar!
description
Onderwijs met aandacht voor elkaar!

Technology

CDN
Cloudflare
CMS
WordPress
jQuery
3.7.1
Analytics
  • Google Tag Manager
Fonts
  • Adobe Fonts
Social widgets
  • Vimeo Embed

Third-party hosts loaded (5)

  • www.googletagmanager.com×2
  • cdn.jsdelivr.net×1
  • cdn.plyr.io×1
  • player.vimeo.com×1
  • use.typekit.net×1

Social

Contact

Email
Phone

DNS records live

NS
  • ns3.firstfind.nl
  • ns4.firstfind.nl
  • ns5.firstfind.net
MX
  • 0 prooleiden-nl.d-v1.mx.microsoft
TXT
Show 4 TXT records
  • ms=ms18748269
  • 1z4XSQKy1rWYzaC9+GL22mg/RIUlfnU2u07Td2ZJCy8=
  • DomainVerification=XG8KT4WWF7IMCKJPNUYZRNO7OG0FUOJF9RPXBJGD8SWWHFIWQOYH9KQQ6D341JCR
  • nintex.5e4ea68abb22350caa6e14cb
Verified for
  • Apple
  • Citrix
  • Google

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com include:spf.bouwmeestergroep.nl include:servers.mcsv.net include:_spf.zivver.com include:_spf.spotler.email include:_spf.cobytes.email include:amazonses.com -all
strict (-all)
DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@prooleiden.nl; ruf=mailto:dmarc@prooleiden.nl; fo=1
policy: reject (enforced)
DKIM
Show 4 DKIM selectors
  • default: v=DKIM1; g=*; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtSjPsdR9NdWKswJ3lf1M62frNyHLlN2lXLaZHr7G+7u7t+LRjxfeedBXHUmB7KX8JaosmO/j3…
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCRT5NbJIRfRsHLNNbvY5vQfgIVca3b6GadnND0G2y7KDUd0dBL4TiVLQWUtaqPcpzr2eVIxxo9Av8rTMGWKo…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3VqAjccJL68YtRgsat3UV4sQt6vBkXWSVXpZZTrAq3kwx2Z8fusQODiHAeIDtv7D2+tDMQ2YLS3lKB…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
selectors probed

Certificate (current)

WE1
from 2026-04-08 to 2026-07-07
Expires in 27 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://prooleiden.nl/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000

Links to (27)

Linked from (21)

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