What powers colorblindtest.us?
Last seen Sep 2026 · 30 technologies across 18 categories
Advertising
Criteo
since Sep 2026
Google AdSense
since Aug 2023
CDN
Databases
MySQL
since Sep 2026
Documentation
Zendesk
since Sep 2026
Ecommerce
Font scripts
Google Font API
since Jan 2023
JavaScript frameworks
JavaScript libraries
Maps
Google Maps
since Sep 2026
Miscellaneous
Personalisation
Programming languages
PHP
since Jan 2023
Reviews
Bazaarvoice Reviews
since Sep 2026
RUM
Cloudflare Browser Insights
since Nov 2025
New Relic
since Sep 2026
Security
HSTS
since Jan 2023
UI frameworks
Web frameworks
Laravel
since Jan 2023
Webmail
Google Workspace
since Jan 2023
AI Crawlers
Blocks 8 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
The other 25 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
Content Signals:
search=yes ai-train=no declared in robots.txt
Infrastructure
- Hosted on Cloudflare (104.21.12.210)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 17,124,759
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Cloudflare Browser Insights Nov 2025