holgerkrupp.de

.de crawl

First seen 2026-04-13 · Last seen 2026-05-11 · ok HTTP/1.1 200 465 ms crawled 2026-05-06

FR · 173.249.3.52 · AS51167 Contabo GmbH

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: holgerkrupp

Technology

Server: Apache

Social

Registration

Updated

2025-12-17

Name servers

ns1052.ui-dns.biz.
ns1077.ui-dns.org.
ns1098.ui-dns.de.
ns1102.ui-dns.com.

DNS records live

NS

ns1052.ui-dns.biz
ns1077.ui-dns.org
ns1098.ui-dns.de
ns1102.ui-dns.com

MX

10 aspmx1.migadu.com
20 aspmx2.migadu.com

TXT

hosted-email-verify=nsw0aw3j
keybase-site-verification=IiGr3O7iJP9JgwcwJ16jyW3dJsKAykCdVJk81F_BkhU

Email authentication strong

SPF: v=spf1 include:spf.migadu.com -all
strict (-all)
DMARC: v=DMARC1; p=quarantine;
policy: quarantine
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-01 to 2026-07-30

Expires in 70 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://holgerkrupp.de/

findings

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

Links to (2)

Linked from (3)