gustav-duesing.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-15 · ok HTTP/1.1 200 1620 ms crawled 2026-05-11

DE · 81.169.145.74 · AS6724 Strato GmbH

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Gustav Düsing
Language: en

Open Graph

url: https://gustav-duesing.com
title: Gustav Düsing
locale: en_US
site name: Gustav Düsing
description: We are constantly exploring, experimenting and tinkering with space, material and structure to find new ways for architecture to respond to our current environmental and socio-political challenges.

Technology

Server: Apache
CMS: WordPress

Social widgets

Vimeo Embed

Third-party hosts loaded (1)

player.vimeo.com×3

Social

Contact

Email

info@gustav-duesing.com

Phone

30 40 75 55 24

Registration

Registrar

Cronon GmbH

Created

2011-09-16

Expires

2026-09-16 118 days left

Updated

2025-09-17

Name servers

docks03.rzone.de
shades18.rzone.de

DNS records live

NS

docks03.rzone.de
shades18.rzone.de

MX

5 smtpin.rzone.de

Email authentication strong

SPF: v=spf1 redirect=_spf.strato.com
no all qualifier
DMARC: v=DMARC1;p=reject;
policy: reject (enforced)
DKIM: no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36

from 2026-02-15 to 2027-03-09

Expires in 292 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://gustav-duesing.com/

findings

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