indexo.dev

christiantietze.de

.de crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 883 ms crawled 2026-05-18

DE · 83.223.95.12 · AS8875 sinma GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Welcome! • Christian Tietze
Description
Blog and portfolio of Christian Tietze: developer of macOS and iOS apps, writer of programming books, and consultant of amazing devs.
Feeds

Open Graph

url
https://christiantietze.de/
title
Welcome!
site name
Christian Tietze
description
Blog and portfolio of Christian Tietze: developer of macOS and iOS apps, writer of programming books, and consultant of amazing devs.

Technology

Server
Apache

Third-party hosts loaded (2)

  • cdn.telemetrydeck.com×1
  • mastodon.social×1

Social

Contact

Email

Registration

Updated
2013-07-03
Name servers
  • dns1.hostsharing.net.
  • dns2.hostsharing.net.
  • dns3.hostsharing.net.

DNS records live

NS
  • dns1.hostsharing.net
  • dns2.hostsharing.net
  • dns3.hostsharing.net
MX
  • 10 in1-smtp.messagingengine.com
  • 20 in2-smtp.messagingengine.com
TXT
  • google-site-verification=vX-YSThMcPZfy8iNAXA_fuFVY0iRbsxvlVB0hUy6tiU

Email authentication weak

SPF
v=spf1 include:spf.messagingengine.com ?all
neutral (?all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-03-24 to 2026-06-22
Expires in 33 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://christiantietze.de/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=15552000; includeSubDomains

Links to (2)

Linked from (5)