versioncheck-bg.addons.mozilla.org
403 Forbidden
Last scanned Jul 23, 2026, 12:53 PM
Overall score
Great
Summary
This website is hosted on Google Cloud. SEO is fair (60/100) and accessibility is good (85/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Google Cloud
Top issues to fix
10 issues found · 2 high priority
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+4 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
230 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Meta tags
- Title
- 403 Forbidden
- Description
- Canonical
- Language
- Charset
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- Google Cloud
- CDN provider
- —
- IP address
- 34.160.90.233
- ASN
- AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- addons.mozilla.org
- Valid from
- Jun 16, 2026
- Valid to
- Sep 14, 2026
- Days until expiry
- 53
- SAN domains
- addons.mozilla.org, blocklist.addons.mozilla.org, reviewers.addons.mozilla.org, services.addons.mozilla.org, versioncheck-bg.addons.mozilla.org, versioncheck.addons.mozilla.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
0 scripts · 0 stylesheets
JS / CSS size
0 B · 0 B
Page size
150 B
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://versioncheck-bg.addons.mozilla.org
- Final URL
- https://versioncheck-bg.addons.mozilla.org
- HTTP status
- 403
- HTTP version
- HTTP/2
- Response time
- 230 ms
- HTML size
- 150 B
- Redirect chain
- https://versioncheck-bg.addons.mozilla.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does versioncheck-bg.addons.mozilla.org use?
- We did not detect any specific technologies for versioncheck-bg.addons.mozilla.org in the latest scan.
- Is versioncheck-bg.addons.mozilla.org secure (HTTPS)?
- Yes. versioncheck-bg.addons.mozilla.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 14, 2026.
- Who hosts versioncheck-bg.addons.mozilla.org?
- versioncheck-bg.addons.mozilla.org is hosted on Google Cloud.
- What is versioncheck-bg.addons.mozilla.org's SEO score?
- versioncheck-bg.addons.mozilla.org scored 60/100 for SEO in the latest analysis (fair).
- What is versioncheck-bg.addons.mozilla.org's overall website score?
- versioncheck-bg.addons.mozilla.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card