hschwentner.io

.io crawl

First seen 2026-04-14 · Last seen 2026-05-15 · ok HTTP/1.1 200 1900 ms crawled 2026-05-08

US · 185.199.109.153 · AS54113 Fastly, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: Henning Schwentner
Description: Domain-Driven Design, microservices, monolith splitting, Collaborative Modeling, software architecture, and programming in general
Language: en
Canonical: https://hschwentner.io/

Open Graph

url: https://hschwentner.io/
title: Henning Schwentner
locale: en
site name: Henning Schwentner
description: Domain-Driven Design, microservices, monolith splitting, Collaborative Modeling, software architecture, and programming in general

Technology

CDN: Fastly
Server: GitHub.com
CMS: WordPress

Third-party hosts loaded (4)

dpunkt.de×3
cdn.jsdelivr.net×2
www.informit.com×1
www.oreilly.com×1

Social

DNS records live

NS

ns1058.ui-dns.com
ns1103.ui-dns.org
ns1118.ui-dns.biz
ns1125.ui-dns.de

MX

10 mx00.ionos.de
10 mx01.ionos.de

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 2026-04-25 to 2026-07-24

Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://hschwentner.io/

findings

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

Links to (18)

Linked from (3)