indexo.dev

jens-lehmann.org

.org crawl

First seen 2026-05-15 · Last seen 2026-05-15 · ok HTTP/1.1 200 1212 ms crawled 2026-05-20

DE · 81.169.145.79 · AS6724 Strato GmbH

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Home - Prof. Dr. Jens Lehmann
Description
Prof. Dr. Jens Lehmann SDA Group Medium Blog
Language
en-US
Canonical
https://jens-lehmann.org/

Open Graph

url
https://jens-lehmann.org/
title
Home - Prof. Dr. Jens Lehmann
locale
en_US
site name
Prof. Dr. Jens Lehmann
description
Prof. Dr. Jens Lehmann SDA Group Medium Blog

Technology

Server
Apache
CMS
WordPress
PHP
8.1.34 end of life
jQuery
3.7.1

Social

Registration

Registrar
Cronon GmbH
Created
2006-03-14
Expires
2027-03-14 297 days left
Updated
2026-04-28
Name servers
  • docks04.rzone.de
  • shades17.rzone.de

DNS records live

NS
  • docks04.rzone.de
  • shades17.rzone.de
MX
  • 5 smtpin.rzone.de

Email authentication strong

SPF
not published
DMARC
v=DMARC1;p=reject;
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2025-11-20 to 2026-12-12
Expires in 205 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://jens-lehmann.org/

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

Links to (14)

Linked from (1)