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kernkonzept.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 3130 ms crawled 2026-05-18

DE · 159.69.200.6 · AS24940 Hetzner Online GmbH

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Kernkonzept - we engineer security
Description
Kernkonzept develops the open-source L4Re Operating System Framework: a microkernel-based hypervisor for safety & security.
Language
en-US
Generator
WordPress 6.9.4
Canonical
https://www.kernkonzept.com/
Translations
  • de ×2
  • en ×2
Feeds

Open Graph

url
https://www.kernkonzept.com/
title
Kernkonzept - we engineer security
locale
en_US
site name
Kernkonzept
description
Kernkonzept develops the open-source L4Re Operating System Framework: a microkernel-based hypervisor for safety & security.
updated time
2026-05-13T11:38:55+02:00

Technology

Server
Apache
CMS
WordPress

Social

Registration

Registrar
InterNetX GmbH
Created
2012-03-26
Expires
2027-03-26 309 days left
Updated
2026-03-27
Name servers
  • ns1.kernkonzept.net
  • ns2.kernkonzept.net

DNS records live

NS
  • ns1.kernkonzept.net
  • ns2.kernkonzept.net
MX
  • 10 mx1.kernkonzept.com
Verified for
  • Anthropic
  • Google
  • Microsoft 365

Email authentication partial

SPF
v=spf1 ip4:159.69.200.6 ip6:2a01:4f8:1c1c:b490::2/64 include:spf.protection.outlook.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:mail-dmarc@kernkonzept.com; ruf=mailto:mail-dmarc@kernkonzept.com
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-05-18 to 2026-08-16
Expires in 87 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.kernkonzept.com/

present
  • content-security-policy
  • x-frame-options
findings
  • missing HSTS
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
content-security-policy
frame-ancestors 'self'

Links to (8)

Linked from (2)