gu.de

.de crawl

First seen 2026-04-15 · Last seen 2026-05-18 · ok HTTP/1.1 200 1846 ms crawled 2026-05-10

CA · 23.227.38.65 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: GU Verlag – GU Online-Shop
Description: Du suchst gute Ratgeber? Dann bist du beim GU Verlag genau richtig. Bei uns findest du interessante Ratgeber-Bücher zu allen Bereichen des Lebens!
Language: de
Canonical: https://gu.de/

Open Graph

url: https://gu.de/
title: GU Verlag
site name: GU Online-Shop
description: Du suchst gute Ratgeber? Dann bist du beim GU Verlag genau richtig. Bei uns findest du interessante Ratgeber-Bücher zu allen Bereichen des Lebens!

Technology

CDN: Cloudflare
CMS: Shopify

Analytics

Google Tag Manager

Third-party hosts loaded (8)

cdnjs.cloudflare.com×5
unpkg.com×4
cdn.shopify.com×3
shop.app×2
fonts.shopifycdn.com×1
js-eu1.hs-scripts.com×1
monorail-edge.shopifysvc.com×1
www.googletagmanager.com×1

Social

Registration

Updated

2015-11-10

Name servers

a.ns14.net.
b.ns14.net.
c.ns14.net.
d.ns14.net.

DNS records live

NS

a.ns14.net
b.ns14.net
c.ns14.net
d.ns14.net

MX

5 mxa-00596a01.gslb.pphosted.com
5 mxb-00596a01.gslb.pphosted.com

TXT

Show 10 TXT records

facebook-domain-verification=0fo9c2ha7nqoqjr95efesth2cdeb1h
facebook-domain-verification=5r7ie2xpusikbe4dg9tbifmeufjzg9
knowbe4-site-verification=0694ce74005828dc4bb8b7299bfb6f61
MS=ms67237601
3361ced520a9b3b10b43bdfb1c5cda1513651ed6
ADNS
ZOOM_verify_jjGY0qV3OJ1E0du4uxQb7L
atlassian-domain-verification=44u2arSH/BE6WtFie5Ua55QvaIWyh31VqUPMFW7TasPRnh3yQaOhcapxnn9kiEKy
bw=72KOcRS1tGqqQwef9h2a1DHHUfyOlDSQ4BMaHrxomsJL
google-site-verification=qnXLNdBkLJczRLvithTaniygYsqVWA44jaXmeTtwIbQ

Email authentication strong

SPF

v=spf1 include:spf.easybill-mail.de include:27012882.spf06.hubspotemail.net include:spf.flexiconf.com include:_spf.psm.knowbe4.com include:_spf.wpcloud.com include:spf-00596a01.pphosted.com include:spf.protection.outlook.com include:145800545.spf07.hubspotemail.net include:mailgun.org ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

policy: reject (enforced)

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAum29hecJp1snLTEica1cK7209rXzgc6K8TMIPEh7gMQyu9CpLjvIzddEv694rqA8wRSiBh9pT4JkjD…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxFqwbKKlG4VPZtNgyHmHVC+7AI8tpFA1Vg8q6S7GxC8ZwBaGDunEWvM5c+/+3XECcYDBCNFQQiRR6h4Xtv…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvIgHpKQGUh9BIrRysZYF1OaKG7H8G0q/USoN7XufZ6rnA+XWN3TNpYTjKTZ5W2OPGvY3t3JPqKkyvloPzw…

selectors probed

Certificate (current)

from 2026-03-17 to 2026-06-15

Expires in 26 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://gu.de/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options

findings

short HSTS max-age
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: DENY
x-content-type-options: nosniff
content-security-policy: block-all-mixed-content; frame-ancestors 'none'; upgrade-insecure-requests;
strict-transport-security: max-age=7889238