indexo.dev

stefan-marr.de

.de crawl

First seen 2026-04-20 · Last seen 2026-05-11 · ok HTTP/1.1 200 1134 ms crawled 2026-05-14

DE · 193.30.121.19 · AS197540 netcup GmbH

Reputation 100/100

Classifying

HTML metadata

Title
Stefan-Marr.de · personal and research notes
Language
en-US
Feeds

Technology

Server
nginx
Analytics
  • Google Tag Manager

Third-party hosts loaded (3)

  • 1drv.ms×1
  • gmpg.org×1
  • www.googletagmanager.com×1

Social

Registration

Updated
2020-11-13
Name servers
  • root-dns.netcup.net.
  • second-dns.netcup.net.
  • third-dns.netcup.net.

DNS records live

NS
  • root-dns.netcup.net
  • second-dns.netcup.net
  • third-dns.netcup.net
MX
  • 40 mail2.stefan-marr.de

Email authentication strong

SPF
v=spf1 ip4:193.30.121.19 ip4:81.20.134.149 ip6:2a03:4000:2a:59b:48f8:39ff:feaa:f064 -all
strict (-all)
DMARC
v=DMARC1; p=reject; adkim=s; aspf=s; pct=100
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-05-10 to 2026-08-08
Expires in 80 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://stefan-marr.de/

present
  • strict-transport-security
  • x-frame-options
findings
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=63072000

Links to (10)

Linked from (1)