indexo.dev

operaballet.nl

.nl crawl

First seen 2026-05-12 · Last seen 2026-05-18 · ok HTTP/1.1 200 11276 ms crawled 2026-05-18

NL · 185.113.196.231 · AS8315 WorldStream B.V.

Reputation 100/100

Classifying

HTML metadata

Title
Welkom! | Nationale Opera & Ballet
Description
Van grote klassiekers tot nieuwe producties: de kaartverkoop voor de eerste helft van seizoen 2026 – 2027 is gestart.
Language
nl
Canonical
https://www.operaballet.nl/
Translations
  • en
  • nl

Open Graph

url
https://www.operaballet.nl/node/1293
title
Boek je kaarten voor het nieuwe seizoen | Nationale Opera & Ballet
image:url
https://www.operaballet.nl/sites/default/files/styles/1200x630/public/images/Gebouw/25-26-NOB-gebouw-buiten-nacht-%C2%A9Altin-Kaftira-ALT09800.jpg?itok=zT1Fr0x5
site name
Nationale Opera & Ballet
description
Van grote klassiekers tot nieuwe producties: de kaartverkoop voor de eerste helft van seizoen 2026 – 2027 is gestart.

Technology

Server
nginx
CMS
Drupal
Analytics
  • Google Tag Manager

Third-party hosts loaded (1)

  • www.googletagmanager.com×1

Social

Contact

Email
Phone

Registration

Registrar
Accenture B.V.
Created
2012-07-18
Updated
2021-07-19
Name servers
  • ns4.sentia.nl
  • ns7.sentia.net
  • ns5.sentia.nl
  • ns6.sentia.net

DNS records live

NS
  • ns4.sentia.nl
  • ns5.sentia.nl
  • ns6.sentia.net
  • ns7.sentia.net
MX
  • 0 operaballet-nl.mail.protection.outlook.com

Email authentication strong

SPF
not published
DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=86400; sp=quarantine
policy: quarantine · sp=quarantine
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCeLWDinVfsz/GlLXSS2mTNMCSnYTnNgX/w9E+xoGeFaSGjesER28q5oElM9gsDuAw+idoPIXxDDYhkM1zrp/…
selectors probed

Certificate (current)

Sectigo Public Server Authentication CA OV R36
from 2026-02-02 to 2027-02-22
Expires in 279 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.operaballet.nl/

present
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing HSTS
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
  • missing Permissions Policy
Header values
referrer-policy
no-referrer-when-downgrade
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
content-security-policy
default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdnjs.cloudflare.com https://static.cloudflareinsights.com https://consentcdn.cookiebot.com https://consent.cookiebot.com https://unpkg.com https://cdn.jsdelivr.net https://www.googletagmanager.com *.google-analytics.com https://*.google.com https://ssl.google-analytics.com https://www.googleadservices.com https://*.doubleclick.net dev.visualwebsiteoptimizer.com *.leadfamly.com https://*.pinterest.com https://connect.facebook.net https://*.adform.net https://*.adnxs.com *.hotjar.com *.hotjar.io *.pinimg.com *.mailplus.nl https://*.gstatic.com https://www.youtube.com/iframe_api https://www.youtube.com/s/player/ https://pipeline.operaballet.nl https://blokks.co https://themes.blokks.cloud https://*.clarity.ms https://widget.slinger.to https://*.omniconvert.com https://bat.bing.com; style-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com cdn.jsdelivr.net https://tagmanager.google.com https://fonts.googleapi

Links to (5)

Linked from (1)