rechnungserklaerer.de

.de crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 865 ms crawled 2026-05-19

DE · 188.34.200.199 · AS24940 Hetzner Online GmbH

Reputation 62/100 listed in spam blocklist weak security headers no dmarc policy

Classifying

HTML metadata

Title: open.INC
Description: An open.INC Web-Application

Technology

Server: Caddy

Registration

Updated

2021-12-03

Name servers

helium.ns.hetzner.de.
hydrogen.ns.hetzner.com.
oxygen.ns.hetzner.com.

DNS records live

NS

helium.ns.hetzner.de
hydrogen.ns.hetzner.com
oxygen.ns.hetzner.com

MX

10 mail.rechnungserklaerer.de

Email authentication weak

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

Certificate (current)

E7

from 2026-05-14 to 2026-08-12

Expires in 84 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://rechnungserklaerer.de/

findings

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

Linked from (22)