indexo.dev

osn.de

.de dns crawl

First seen 2026-05-01 · Last seen 2026-05-19 · ok HTTP/1.1 200 584 ms crawled 2026-05-08

DE · 194.45.27.133 · AS8859 OSN Online Service Nuernberg GmbH

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
OSN Online Service Nürnberg GmbH | Internetkompetenz seit 1994
Description
OSN Ihr kompetenter Ansprechpartner für anspruchsvolle Internet-Dienstleistungen, Consulting, Virtualisierung und Outsourcing mit langjähriger Erfahrung und eigenem Datacenter
Generator
OSN Online Service Nürnberg GmbH
Canonical
https://www.osn.de/

Technology

Server
Apache

Registration

Updated
2014-10-17
Name servers
  • dns.osn.de.
  • dns.osn.net.
  • dns.osn.org.

DNS records live

NS
  • dns.osn.de
  • dns.osn.net
  • dns.osn.org
MX
  • 10 mx1.osn.de
  • 20 mx2.osn.de
  • 30 mx3.osn.de
  • 40 mx4.osn.de
Verified for
  • Google
  • Microsoft 365

Email authentication partial

SPF
v=spf1 ip4:194.45.27.0/24 ip4:213.241.148.44 ip4:213.241.148.45 ip4:140.82.36.222 ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarcreport@osn.de
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-06 to 2026-07-05
Expires in 45 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.osn.de/

present
  • x-content-type-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff