theory.com
Access Denied
Last scanned Jul 26, 2026, 5:34 AM · 2 views
Overall score
Great
Summary
This website is hosted on AKAMAI-AS - Akamai Technologies, Inc., US. SEO is fair (70/100) and accessibility is good (85/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on AKAMAI-AS - Akamai Technologies, Inc., US
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.
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.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+4 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
748 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Meta tags
- Title
- Access Denied
- Description
- Canonical
- Language
- Charset
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- AKAMAI-AS - Akamai Technologies, Inc., US
- CDN provider
- —
- IP address
- 104.120.70.129
- ASN
- AS16625 (AKAMAI-AS - Akamai Technologies, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- theory.com
- Valid from
- Apr 9, 2026
- Valid to
- Oct 24, 2026
- Days until expiry
- 88
- SAN domains
- theory.com, www.theory.com, uk.theory.com, store.theory.com, outlet.theory.com, jp.theory.com, jp.store.theory.com, eu.theory.com, employee.theory.com, cn.theory.com, cn.store.theory.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 3 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
368 B
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 39
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://theory.com
- Final URL
- https://www.theory.com
- HTTP status
- 403
- HTTP version
- HTTP/2
- Response time
- 748 ms
- HTML size
- 368 B
- Redirect chain
- https://theory.com → https://www.theory.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does theory.com use?
- We did not detect any specific technologies for theory.com in the latest scan.
- Is theory.com secure (HTTPS)?
- Yes. theory.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Oct 24, 2026.
- Who hosts theory.com?
- theory.com is hosted on AKAMAI-AS - Akamai Technologies, Inc., US.
- What is theory.com's SEO score?
- theory.com scored 70/100 for SEO in the latest analysis (fair).
- What is theory.com's overall website score?
- theory.com has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card