seo-experte-hamburg.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-09 · ok HTTP/1.1 200 2447 ms crawled 2026-05-07

DE · 217.160.0.109 · AS8560 IONOS SE

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: SEO Experte Hamburg – Jan Siefken | SEO Beratung
Description: SEO Experte Hamburg: Jan Siefken bietet SEO Beratung für Websites und Onlineshops. Mehr Sichtbarkeit, bessere Rankings und messbare Ergebnisse.
Language: de-DE
Canonical: https://www.seo-experte-hamburg.com/

Open Graph

url: https://www.seo-experte-hamburg.com/
title: SEO Experte Hamburg – Jan Siefken | SEO Beratung
locale: de_DE
site name: SEO Experte Hamburg – Jan Siefken | SEO Beratung
description: SEO Experte in Hamburg für nachhaltige Sichtbarkeit, bessere Rankings und messbare Ergebnisse. Beratung für Websites und Onlineshops.

Technology

Server: Apache

Social widgets

YouTube Embed

Third-party hosts loaded (1)

www.youtube.com×2

Social

Contact

Address: Hamburg, DE

Registration

Registrar

IONOS SE

Created

2025-06-17

Expires

2026-06-17 27 days left

Updated

2025-06-17

Name servers

ns1021.ui-dns.org
ns1085.ui-dns.biz
ns1096.ui-dns.de
ns1118.ui-dns.com

DNS records live

NS

ns1021.ui-dns.org
ns1085.ui-dns.biz
ns1096.ui-dns.de
ns1118.ui-dns.com

MX

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

Email authentication strong

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)

Sectigo Public Server Authentication CA DV R36

from 2026-02-25 to 2027-02-26

Expires in 281 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.seo-experte-hamburg.com/

findings

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