indexo.dev

ckalender.de

.de crawl

First seen 2026-04-13 · Last seen 2026-05-07 · ok HTTP/1.1 200 289 ms crawled 2026-05-07

DE · 45.144.186.41 · AS15817 Mittwald CM Service GmbH & Co. KG

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
CKalender: Der bewährt-beliebte Online-Gruppenkalender und Buchungssystem. Termine intelligent online verwalten, kommunizieren, publizieren
Language
de
Canonical
https:/www.ckalender.de/manual/index.php

Registration

Updated
2025-04-30
Name servers
  • ns2.inwx.de.
  • ns3.inwx.eu.
  • ns.inwx.de.

DNS records live

NS
  • ns.inwx.de
  • ns2.inwx.de
  • ns3.inwx.eu
MX
  • 10 mx1.agenturserver.de
  • 10 mx2.agenturserver.de
  • 20 mx3.agenturserver.de
  • 50 mx4.agenturserver.de
Verified for
  • Google

Email authentication partial

SPF
v=spf1 include:agenturserver.de ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-18 to 2026-06-16
Expires in 26 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.ckalender.de/manual/index.php

present
  • strict-transport-security
  • x-frame-options
findings
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY
strict-transport-security
max-age=31536000; includeSubDomains

Linked from (1)