What powers chart.org?
Last seen Sep 2026 · 13 technologies across 11 categories
Analytics
CDN
Font scripts
JavaScript libraries
Operating systems
PaaS
Programming languages
Security
Video players
Web servers
Webmail
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Nov 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- PerplexityBot Blocked
- YouBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 16 AI crawlers we track are not mentioned and are blocked by the catch-all rule (User-agent: *).
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
All crawlers blocked
Audience
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.61 / 10 · ranked #808,795 of all domains
48 referring domains · OpenPageRank
Search traffic
360 est. monthly organic visits (US)
187 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on Google (35.212.48.62)
- DNS: SiteGround Email
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 8,595,383, 2 hosts
DNS records as swept Nov 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Amazon Web Services Jul 2026
- detected Apache HTTP Server Jul 2026
- detected Cloudflare Jul 2026
- detected Cloudflare Bot Management Jul 2026
- detected Google Analytics Jul 2026
- detected Google Font API Jul 2026
- detected Google Workspace Jul 2026
- detected jQuery Jul 2026
- detected jQuery CDN Jul 2026
- detected OWL Carousel Jul 2026
- detected PHP Jul 2026
- detected Ubuntu Jul 2026
- detected YouTube Jul 2026