indexo.dev

arc42.de

.de crawl

First seen 2026-04-16 · Last seen 2026-05-07 · ok HTTP/1.1 200 1358 ms crawled 2026-05-11

US · 185.199.110.153 · AS54113 Fastly, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Erfolgreiche Softwarearchitektur - arc42
Description
Entwerfen, kommunizieren und dokumentieren. Bewährt, praktisch und pragmatisch. Frei verfügbar, Open-Source und schmerzfrei.
Language
de
Canonical
https://arc42.de/

Open Graph

url
https://arc42.de/
title
Erfolgreiche Softwarearchitektur
locale
de
site name
arc42
description
Entwerfen, kommunizieren und dokumentieren. Bewährt, praktisch und pragmatisch. Frei verfügbar, Open-Source und schmerzfrei.

Technology

CDN
Fastly
Server
GitHub.com
Analytics
  • Plausible

Third-party hosts loaded (1)

  • plausible.io×1

Social

Registration

Updated
2018-07-27
Name servers
  • ns1033.ui-dns.biz.
  • ns1033.ui-dns.com.
  • ns1033.ui-dns.de.
  • ns1033.ui-dns.org.

DNS records live

NS
  • ns1033.ui-dns.biz
  • ns1033.ui-dns.com
  • ns1033.ui-dns.de
  • ns1033.ui-dns.org
MX
  • 10 mx00.ionos.de
  • 10 mx01.ionos.de
TXT
  • google-site-verification=cJkGGo3KnDRxH3RaGsX0mJDVdz8uio-JL5X440TAMZc

Email authentication partial

SPF
v=spf1 include:_spf-eu.ionos.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-03-14 to 2026-06-12
Expires in 23 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://arc42.de/

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

Links to (7)

Linked from (1)