harpercollins.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-14 · ok HTTP/1.1 200 1600 ms crawled 2026-05-07

CA · 23.227.38.65 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: Verlagsgruppe HarperCollins Deutschland GmbH
Language: de
Canonical: https://www.harpercollins.de/

Open Graph

url: https://www.harpercollins.de/
title: Verlagsgruppe HarperCollins Deutschland GmbH
site name: Verlagsgruppe HarperCollins Deutschland GmbH
description: Verlagsgruppe HarperCollins Deutschland GmbH

Technology

CDN: Cloudflare
CMS: Shopify

Cookie consent

OneTrust

Third-party hosts loaded (3)

cdn.cookielaw.org×1
cdn.shopify.com×1
monorail-edge.shopifysvc.com×1

Social

Registration

Updated

2015-10-09

Name servers

ns1.markmonitor.com.
ns2.markmonitor.com.
ns3.markmonitor.com.
ns4.markmonitor.com.

DNS records live

NS

ns1.markmonitor.com
ns2.markmonitor.com
ns3.markmonitor.com
ns4.markmonitor.com

MX

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

TXT

Show 9 TXT records

knowbe4-site-verification=0694ce74005828dc4bb8b7299bfb6f61
facebook-domain-verification=l2sze1guomfcbh88frf4dgqu5daf4q
extensis-domain-verification=fb808a86-2bd8-4609-b6da-ee938a0b5625
atlassian-domain-verification=uNoIhBXurxzVlQa0FvK2t9Yld5byfvXbFRQaMToGvrieKjBdylMs8jcSXRKQKqao
MS=ms62755218
ZOOM_verify_zA6kA4RmBzjqRHHypg6tFe
brevo-code:e456e5b66a8830e942fac34a05a4e056
shopify-verification-code=Q4nGB6nHiNTYNpq3nZenxEd29tE1D2
ValidationTokenValue=ea3f7568-e676-4b04-b88b-b3bf7a0b5e01

Email authentication strong

SPF

v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all

strict (-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

selector2: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDZbuRK50kfeUtapnVLv0+8PcAi8mB2juMKjLfkD0uYOnjpYMbhFueATTCzXcOOZb0wnV9ybmsKjz3OKfL4vR…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA10iziNMtmIQUZ7G9d8s3NMjdj4CmyrA1mB0AlilpQvTnLHOVeIJNfhvUNKkTlh2y/lDRA0LcdwI8VOlB1i…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuXGdwMu0Aay5xHtt0Udl/C/Pro/Jggco0yYNbdTw34MKWP+9VGgRICvs8sFAm6FgV5MeF0e6QCUYHS6CWp…

selectors probed

Certificate (current)

from 2026-04-01 to 2026-06-30

Expires in 41 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.harpercollins.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