indexo.dev

openbooks-frankfurt.de

.de crawl

First seen 2026-04-15 · Last seen 2026-05-10 · ok HTTP/1.1 200 2997 ms crawled 2026-05-10

DE · 185.243.11.109 · AS197540 netcup GmbH

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Open Books – Lesefest zur Frankfurter Buchmesse
Language
de
Generator
WordPress 6.8.5
Canonical
https://www.openbooks-frankfurt.de/

Technology

Server
nginx
CMS
WordPress

Social

Registration

Updated
2020-09-30
Name servers
  • ns81.domaincontrol.com.
  • ns82.domaincontrol.com.

DNS records live

NS
  • ns81.domaincontrol.com
  • ns82.domaincontrol.com
MX
  • 100 mxlb.ispgateway.de

Email authentication weak

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-27 to 2026-06-25
Expires in 36 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.openbooks-frankfurt.de/

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 (1)