What powers vsaweb.org?
Last seen Sep 2026 · 22 technologies across 12 categories
Analytics
CDN
Font scripts
Hosting
JavaScript frameworks
JavaScript libraries
Miscellaneous
Security
Video players
Web servers
Webmail
Widgets
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 58% desktop
- 42% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.27 / 10 · ranked #1,164,718 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 1.5 MB · 65 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on IBM Cloud (67.18.65.7)
- DNS: GoDaddy DNS
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 11,346,924, 2 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| vsaweb.org | 17 |
| www.vsaweb.org | 11 |
Full technology history →
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Recent changes
- dropped CodeMirror Dec 2025
- dropped core-js Dec 2025
- dropped Webpack Dec 2025