indexo.dev

ajentzen.de

.de crawl

First seen 2026-05-10 · Last seen 2026-05-16 · ok HTTP/1.1 200 8258 ms crawled 2026-05-16

DE · 217.160.0.229 · AS8560 IONOS SE

Reputation 89/100 weak security headers dmarc monitor-only

sector education type homepage

HTML metadata

Title
Arnulf Jentzen -- CUHK-Shenzhen & University of Münster
Language
de

Technology

Server
Apache

Registration

Updated
2018-07-25
Name servers
  • ns1091.ui-dns.biz.
  • ns1091.ui-dns.com.
  • ns1091.ui-dns.de.
  • ns1091.ui-dns.org.

DNS records live

NS
  • ns1091.ui-dns.biz
  • ns1091.ui-dns.com
  • ns1091.ui-dns.de
  • ns1091.ui-dns.org
MX
  • 10 mx00.ionos.de
  • 10 mx01.ionos.de

Email authentication partial

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 2025-09-13 to 2026-09-28
Expires in 132 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (23)

Linked from (1)