siefkes.de

.de crawl

First seen 2026-05-02 · Last seen 2026-05-09 · ok HTTP/1.1 200 3443 ms crawled 2026-05-09

DE · 185.26.156.93 · AS58010 uvensys GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Dr. Martin Siefkes | siefkes.de
Language
en
Generator
Drupal 10 (https://www.drupal.org)
Canonical
https://www.siefkes.de/en/home
Translations
  • de
  • en

Technology

Server
nginx
CMS
Drupal
Social widgets
  • YouTube Embed

Third-party hosts loaded (1)

  • www.youtube.com×1

Registration

Updated
2020-09-04
Name servers
  • ns81.domaincontrol.com.
  • ns82.domaincontrol.com.

DNS records live

NS
  • ns81.domaincontrol.com
  • ns82.domaincontrol.com
MX
  • 10 gehrels.uberspace.de

Email authentication weak

SPF
v=spf1 mx ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-04 to 2026-07-03
Expires in 44 days

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.siefkes.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=31536000

Links to (29)

Linked from (1)