indexo.dev

holtmannplus.de

.de crawl

First seen 2026-05-27 · Last seen 2026-06-01 · ok HTTP/1.1 200 850 ms crawled 2026-05-30

DE · 88.198.41.51 · AS24940 Hetzner Online GmbH

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Live-Kommunikation & Markenkommunikation: Holtmann Plus
Description
Live-Kommunikation & Markenkommunikation mit Holtmann+ ✔️Analyse ✚ Strategie ✔️Konzept ✚ Design ✔️Abwicklung ✚ Steuerung ✔️Durchführung ✚ Nachbearbeitung
Language
de
Generator
TYPO3 CMS
Canonical
https://www.holtmannplus.de/home
Translations
  • de
  • en

Open Graph

title
Live-Kommunikation & Markenkommunikation von Holtmann+
description
Live-Kommunikation & Markenkommunikation mit Holtmann+ ✔️Analyse ✚ Strategie ✔️Konzept ✚ Design ✔️Abwicklung ✚ Steuerung ✔️Durchführung ✚ Nachbearbeitung

Technology

Server
nginx
jQuery
3.6.1

Third-party hosts loaded (1)

  • cloud.ccm19.de×1

Social

Contact

Phone

Registration

Updated
2024-07-01
Name servers
  • nsa2.schlundtech.de.
  • nsb2.schlundtech.de.
  • nsc2.schlundtech.de.
  • nsd2.schlundtech.de.

DNS records live

NS
  • nsa2.schlundtech.de
  • nsb2.schlundtech.de
  • nsc2.schlundtech.de
  • nsd2.schlundtech.de
MX
  • 10 holtmannplus-de.mail.protection.outlook.com
TXT
  • atlassian-sending-domain-verification=32782e27-145f-429e-b6ab-eadc0f252845
Verified for
  • Atlassian
  • Google
  • Miro

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
strict (-all)
DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:rua@holtmannplus.de; ruf=mailto:ruf@holtmannplus.de
policy: reject (enforced)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw+PyBN4xOr7E6q8rt3yyUmjnecxtZQCOSS3A+lJMBchzX9TFB8HIQgZN0PHQwIZizwjNzuYe2gE/FS…
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

R13
from 2026-04-07 to 2026-07-06
Expires in 33 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.holtmannplus.de/home

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 (2)