professional-system.de

.de crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 6942 ms crawled 2026-05-19

DE · 157.230.77.103 · AS14061 DigitalOcean, LLC

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title

Your Hub for AV & IT Integration | Professional System

Description

Case Studies, Features, Basics und Business-Facts für Planer, Errichten, Ingenieure, System-Integratoren, IT-Spezialisten, Designer und Facility-Manager.

Language

de-DE

Generator

WP Rocket 3.21.1

Canonical

https://www.professional-system.de/

Feeds

Professional System » Feed RSS
Professional System » Kommentar-Feed RSS
Professional System Feed RSS

Open Graph

title: Professional System
locale: de_DE_formal
site name: Professional System
description: Your Hub for AV & IT Integration

Technology

CMS: WordPress

Analytics

Google Tag Manager

Ads

Google AdSense

Cookie consent

Usercentrics

Third-party hosts loaded (8)

web.cmp.usercentrics.eu×5
privacy-proxy.usercentrics.eu×4
fonts.ebnermedia.de×3
pagead2.googlesyndication.com×3
api.usercentrics.eu×2
static.plenigo.com×2
form-builder.digitalmobil.com×1
www.googletagmanager.com×1

Social

Contact

Email

Phone

Registration

Updated

2021-04-28

Name servers

ns.udag.de.
ns.udag.net.
ns.udag.org.

DNS records live

NS

ns.udag.de
ns.udag.net
ns.udag.org

MX

10 mx-in01.eu.retarus.com
20 mx-in02.eu.retarus.com

TXT

FxTBBkSXKKGf/q/zemPzlTc8VVaVz+9uH2zN3t8COWFviaB3hb6d5wTJOyAb2KOCzehBSxAhdJRI3DnT3qsJmg==
google-site-verification=A6hN6tt98tw-mS-BzLONG9kHjDwPUImB3zdMg-SO2nY
MS=ms60460193

Email authentication partial

SPF: v=spf1 include:_spf.retarus.com include:spf.protection.outlook.com include:cust-spf.exacttarget.com ~all
softfail (~all)
DMARC: v=DMARC1; p=none;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-04-22 to 2026-07-21

Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.professional-system.de/

present

strict-transport-security
x-content-type-options

findings

missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
strict-transport-security: max-age=31536000; includeSubDomains