Is osn.de secure (HTTPS)?

Yes. osn.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 1, 2026.

osn.de is hosted on OSN - OSN Online Service Nuernberg GmbH, DE.

What is osn.de's SEO score?

osn.de scored 70/100 for SEO in the latest analysis (fair).

What is osn.de's overall website score?

osn.de has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.

osn.de

OSN Online Service Nürnberg GmbH | Internetkompetenz seit 1994

Last scanned Jul 27, 2026, 10:43 AM · 1 view

Overall score

Great

Summary

OSN Ihr kompetenter Ansprechpartner für anspruchsvolle Internet-Dienstleistungen, Consulting, Virtualisierung und Outsourcing mit langjähriger Erfahrung und eigenem Datacenter. This website uses Apache hosted on OSN - OSN Online Service Nuernberg GmbH, DE. SEO is fair (70/100) and accessibility is good (85/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

OSN Ihr kompetenter Ansprechpartner für anspruchsvolle Internet-Dienstleistungen, Consulting, Virtualisierung und Outsourcing mit langjähriger Erfahrung und eigenem Datacenter

Germany

Hosted on OSN - OSN Online Service Nuernberg GmbH, DE

Top issues to fix

10 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.

+4 more issues — details in the sections below.

SEO

5 issue(s) found

100

Performance

259 ms

Security

HTTPS & header checks

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

OSN Ihr kompetenter Ansprechpartner für anspruchsvolle Internet-Dienstleistungen, Consulting, Virtualisierung und Outsourcing mit langjähriger Erfahrung und eigenem Datacenter

Meta tags

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
Canonical: https://www.osn.de/
Language
Charset: utf-8
Viewport
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: OSN - OSN Online Service Nuernberg GmbH, DE
CDN provider: —
IP address: 194.45.27.133
ASN: AS8859 (OSN - OSN Online Service Nuernberg GmbH, DE)

DNS records

Type	Value
A	194.45.27.133
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: osn.de
Valid from: Jun 3, 2026
Valid to: Sep 1, 2026
Days until expiry: 35
SAN domains: *.osn.de, osn.de

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 4 · H3 0

Links

15 internal · 0 external · 0 broken

Images

1 total · 0 missing alt

Scripts / Styles

2 scripts · 1 stylesheets

JS / CSS size

99.9 KB · 23.0 KB

Page size

9.5 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 36
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
Meta description longer than 160 characters
No structured data (JSON-LD) found
Missing OpenGraph tags
sitemap.xml not found

Scan details

Requested URL: https://osn.de
Final URL: https://www.osn.de/
HTTP status: 200
HTTP version: HTTP/2
Response time: 259 ms
HTML size: 9.5 KB
Redirect chain: https://osn.de → https://www.osn.de/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does osn.de use?: osn.de is built with Apache.
Is osn.de secure (HTTPS)?: Yes. osn.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 1, 2026.
Who hosts osn.de?: osn.de is hosted on OSN - OSN Online Service Nuernberg GmbH, DE.
What is osn.de's SEO score?: osn.de scored 70/100 for SEO in the latest analysis (fair).
What is osn.de's overall website score?: osn.de has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.