indexo.dev

centrum2020.nl

.nl crawl

First seen 2026-05-27 · Last seen 2026-05-27 · ok HTTP/1.1 200 405 ms crawled 2026-05-30

NL · 85.10.135.30 · AS20857 Signet B.V.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Home
Description
Home
Language
nl-nl
Canonical
https://centrum2020.nl/

Open Graph

url
https://centrum2020.nl/
title
Home
site name
https://centrum2020.nl/
description
Home

Technology

Server
Microsoft-IIS
ASP.NET
4.0.30319
jQuery
3.6.1
Stack
ASP.NET
Analytics
  • Google Tag Manager

Third-party hosts loaded (4)

  • cdnjs.cloudflare.com×3
  • www.googletagmanager.com×2
  • cdn.jsdelivr.net×1
  • www.google.com×1

Social

Contact

Email
Phone

DNS records live

NS
  • ns01.hostnet.nl
  • ns02.hostnet.nl
MX
  • 0 centrum2020-nl.mail.protection.outlook.com

Email authentication strong

SPF
v=spf1 ip4:141.98.36.253 include:spf.protection.outlook.com include:sendgrid.net -all
strict (-all)
DMARC
v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r;
policy: reject (enforced) · sp=reject
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvKXCsrtALKF7k27abQbmP7wiwm1HRL4+9xUdaNt21KoiRuDepz2Fc5DMhriHPN+nhUoXcpma+PQ0vC…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxYph2eshXl+cAcDZLaUGqFxkDHui32Es3ZsVk8YjmSpYrCsIGVmMOoCVaUFvBsNMMQAlhi78ADYUjklFPH…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7Pb6um2hubk0pBNXYPgbIMrswILT2xBd7BwYlsY8LhyF5qf4/uBbTor51LDQ5Z+m9ZVl/jrgYbFUJe+8WZ6G0lG…
selectors probed

Certificate (current)

R13
from 2026-05-26 to 2026-08-24
Expires in 85 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://centrum2020.nl/

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

Links to (3)

Linked from (1)