www-mozilla.fastly-edge.com
Bad Request (400)
Last scanned Jul 23, 2026, 12:53 PM
Overall score
Great
Summary
This website is hosted on Fastly. SEO is fair (60/100) and accessibility is excellent (95/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Fastly
Top issues to fix
10 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
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.
TLS certificate expires in 29 days
SecurityRenew soon or enable auto-renewal to avoid a browser-warning outage.
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.
+4 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
259 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Bad Request (400)
- Description
- Canonical
- Language
- en
- Charset
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Certainly
- Subject
- www-dev-allizom.fastly-edge.com
- Valid from
- Jul 22, 2026
- Valid to
- Aug 21, 2026
- Days until expiry
- 29
- SAN domains
- www-allizom.fastly-edge.com, www-dev-allizom.fastly-edge.com, www-mozilla.fastly-edge.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- 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
143 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 viewport meta tag
Scan details
- Requested URL
- https://www-mozilla.fastly-edge.com
- Final URL
- https://www-mozilla.fastly-edge.com
- HTTP status
- 400
- HTTP version
- HTTP/2
- Response time
- 259 ms
- HTML size
- 143 B
- Redirect chain
- https://www-mozilla.fastly-edge.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does www-mozilla.fastly-edge.com use?
- We did not detect any specific technologies for www-mozilla.fastly-edge.com in the latest scan.
- Is www-mozilla.fastly-edge.com secure (HTTPS)?
- Yes. www-mozilla.fastly-edge.com uses TLS 1.3 with a certificate issued by Certainly, valid until Aug 21, 2026.
- Who hosts www-mozilla.fastly-edge.com?
- www-mozilla.fastly-edge.com is hosted on Fastly, behind Fastly CDN.
- What is www-mozilla.fastly-edge.com's SEO score?
- www-mozilla.fastly-edge.com scored 60/100 for SEO in the latest analysis (fair).
- What is www-mozilla.fastly-edge.com's overall website score?
- www-mozilla.fastly-edge.com has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card