duesseldorf-convention.de

.de crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 5347 ms crawled 2026-05-19

US · 104.21.73.203 · AS13335 Cloudflare, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Startseite - Düsseldorf Convention
Description: Düsseldorf Convention vermarktet die Stadt Düsseldorf als Kongress- und Tagungsstandort und leistet Beratung und Angebotserstellung für Veranstaltungen aus einer Hand.
Language: de
Canonical: https://www.duesseldorf-convention.de/

Open Graph

url: https://www.duesseldorf-convention.de/
title: Startseite - Düsseldorf Convention
description: Düsseldorf Convention vermarktet die Stadt Düsseldorf als Kongress- und Tagungsstandort und leistet Beratung und Angebotserstellung für Veranstaltungen aus einer Hand.

Technology

CDN: Cloudflare

Social

Contact

Phone

+49 211 17202

Registration

Updated

2023-06-27

Name servers

jonah.ns.cloudflare.com.
rose.ns.cloudflare.com.

DNS records live

NS

jonah.ns.cloudflare.com
rose.ns.cloudflare.com

MX

10 duesseldorfconvention-de02i.mail.protection.outlook.com

TXT

pardot884413=81cdd3332b03bacda8c869dd99f197b28a50570b942046bcef4b3691116175ae

Verified for

Google
Microsoft 365

Email authentication weak

SPF

v=spf1 mx include:aspmx.pardot.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf-de.emailsignatures365.com -all

strict (-all)

DMARC

not published

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqwe7ABmK7JBEJ93Il15CUMcYUIxqFlKpg5y16RWRVWhn67n/DHRXZi0gwAhux4yku9WwIrRsPlvoMh…

selectors probed

Certificate (current)

WE1

from 2026-03-27 to 2026-06-25

Expires in 35 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.duesseldorf-convention.de/

present

strict-transport-security
x-frame-options
x-content-type-options
referrer-policy

findings

missing Content Security Policy
missing Permissions Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
strict-transport-security: max-age=15768000, max-age=172800;