What technology does debian.org use?

debian.org is built with Apache.

Is debian.org secure (HTTPS)?

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

What is debian.org's SEO score?

debian.org scored 60/100 for SEO in the latest analysis (fair).

What is debian.org's overall website score?

debian.org has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.

debian.org

Debian -- The Universal Operating System

Last scanned Jul 14, 2026, 1:28 PM

Overall score

Great

Summary

This website uses Apache hosted on MIT-GATEWAYS - Massachusetts Institute of Technology, US. SEO is fair (60/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

SEO

7 issue(s) found

100

Performance

171 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Meta tags

Title: Debian -- The Universal Operating System
Description: Debian is an operating system and a distribution of Free Software. It is maintained and updated through the work of many users who volunteer their time and effort.
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: MIT-GATEWAYS - Massachusetts Institute of Technology, US
CDN provider: —
IP address: 128.31.0.62
ASN: AS3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US)

DNS records

Type	Value
A	128.31.0.62 140.211.166.200 194.177.211.216 130.89.148.77
AAAA	2603:400a:ffff:bb8::801f:3e 2605:bc80:3010:b00:0:deb:166:200 2001:67c:2564:a119::77 2001:648:2ffc:deb:216:61ff:fe2b:6138
MX	—
TXT	SA view
NS	geo2.debian.org geo1.debian.org geo3.debian.org
CAA	—
CNAME	—
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: www.debian.org
Valid from: Jun 3, 2026
Valid to: Sep 1, 2026
Days until expiry: 48
SAN domains: www.debian.org

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyEnabled

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 4 · H2 11 · H3 6

Links

21 internal · 7 external · 0 broken

Images

16 total · 0 missing alt

Scripts / Styles

0 scripts · 4 stylesheets

JS / CSS size

0 B · 19.6 KB

Page size

15.4 KB

Robots.txt & Sitemap

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

SEO issues

Meta description longer than 160 characters
Missing canonical link
Multiple H1 headings found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://debian.org
Final URL: https://www.debian.org/
HTTP status: 200
HTTP version: HTTP/2
Response time: 171 ms
HTML size: 15.4 KB
Redirect chain: https://debian.org → https://www.debian.org/

Frequently asked questions

What technology does debian.org use?: debian.org is built with Apache.
Is debian.org secure (HTTPS)?: Yes. debian.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 1, 2026.
Who hosts debian.org?: debian.org is hosted on MIT-GATEWAYS - Massachusetts Institute of Technology, US.
What is debian.org's SEO score?: debian.org scored 60/100 for SEO in the latest analysis (fair).
What is debian.org's overall website score?: debian.org has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.