indexo.dev

denhelder.nl

.nl crawl

First seen 2026-05-21 · Last seen 2026-05-27 · ok HTTP/1.1 200 414 ms crawled 2026-05-27

NL · 37.200.85.24 · AS213208 Visma Roxit B.V.

Reputation 100/100

Classifying

HTML metadata

Title
Onderwerpen - Gemeente Den Helder
Description
Officiële website van gemeente Den Helder met informatie over onze diensten en het bestuur.
Language
nl

Open Graph

url
https://www.denhelder.nl/Onderwerpen
title
Onderwerpen
description
Officiële website van gemeente Den Helder met informatie over onze diensten en het bestuur.

Technology

jQuery
3.7.1
Stack
Java

Third-party hosts loaded (3)

  • purl.org×2
  • cdn-eu.readspeaker.com×1
  • standaarden.overheid.nl×1

Social

DNS records live

NS
  • ns1.premium-dns.net
  • ns2.premium-dns.net
MX
  • 0 denhelder-nl.x-v1.mx.microsoft
TXT
Show 7 TXT records
  • DomainVerification=3I06NG1KDX83GR30G1GZ7RY82A1ZICW87Z0W4QY984K9AG2P31NWAFZDOXBMSUMA
  • autodesk-domain-verification=VGh8H2wOu8BMxCVhYelZ
  • _q83071k6nsgyyok8mjwvkayfle9ya19
  • 3F/GfwRt+4UQArd9/hKcF37M3UFEY7nNOAMCg3mvX88=
  • HtKYCe4NIB6ruAR62Im+ioI1Mwj54N6h6QqdgCxatDE=
  • QuoVadis=c7d8b1a8-9da6-4f32-8376-609df652b34a
  • BZxqG+YBmdelrj2zENmf3ob8rFs2W+cyK6T4pb4EtR8bk5OgpUUwLkV4XMws8B5TXi5i9+CIA+tF8NB7d1ZFQg==
Verified for
  • Apple
  • Brevo

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com include:_spf.services.centric.eu ip4:91.213.53.18/32 ip4:91.213.53.35/32 ip4:91.213.53.42/32 include:_spf.easycruit.com include:_spf01.rxfront.nl a:relay.smartlockr.eu ip6:2a07:3500:13b8:4000::/56 -all
strict (-all)
DMARC
v=DMARC1;p=reject;pct=100;rua=mailto:dmarc.denhelder@denhelder.nl;aspf=s;adkim=s;
policy: reject (enforced)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8yzZCI+zb6vaJS7pnBUELoC5283u90x7aPzdx/tJCxkf+7kChtpE0J/ZSRDiTGF9PuHe52v0upBOaiIKQVf…
  • mail: v=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCtw4O8ITPh66p/A2vq7zsrB2kwfrTZYG6NZTyY7sVnHv4/3ttX+5FX1fOJK7LJHh8pC/goQNajO+t2KuVEcwGE…
  • dkim: v=DKIM1;k=rsa;p=MIIBIDANBgkqhkiG9w0BAQEFAAOCAQ0AMIIBCAKCAQEAlboIJYAD9zul7+dHBKgGLRyjpfUnw26NEt437PVH6Zk2aT4ejym78U+tFehgs7W2aPjy47tLikXs+X5v…
selectors probed

Certificate (current)

DigiCert EV RSA CA G2
from 2025-06-19 to 2026-07-14
Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://denhelder.nl/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • CSP uses wildcard sources
  • weak frame protection
  • weak content type protection
  • missing Permissions Policy
Header values
referrer-policy
no-referrer
x-frame-options
SAMEORIGIN"
x-content-type-options
nosniff"
content-security-policy
default-src 'self'; base-uri 'self'; img-src * data: https://app.tolkie.nl https://cdn.tolkie.nl; frame-src 'self' https://kaartapi.nl https://www.kaartapi.nl https://websurveys2.govmetric.com https://app-eu.readspeaker.com https://www.youtube-nocookie.com https://www.youtube.com https://content.googleapis.com/ https://vars.hotjar.com https://app.tolkie.nl/ https://player.vimeo.com https://denhelder.maps.arcgis.com https://experience.arcgis.com; frame-ancestors 'self'; manifest-src 'self'; media-src 'self' blob:; script-src 'self' 'nonce-Y2ZlZDIxYWMtMjNiZi00N2E2LWIyOGEtMjFkOWE4ZTg2NDRi' https://stats.pusher.com https://www.browsealoud.com https://www.googletagmanager.com https://www.google-analytics.com https://apis.google.com https://maps.googleapis.com https://siteimproveanalytics.com https://cloudstatic.obi4wan.com https://websurveys2.govmetric.com https://platform.hireserve.nl https://websurveys2.servmetric.com https://cdn1.readspeaker.com https://cdn-eu.readspeaker.com https://vir
strict-transport-security
max-age=31536000; includeSubDomains; preload"

Links to (6)

Linked from (2)