What powers openstf.io?
Last seen Apr 2026 · 11 technologies across 9 categories
CMS
Databases
MySQL
since Jan 2026
Font scripts
Twitter Emoji (Twemoji)
since Jan 2026
JavaScript libraries
Miscellaneous
RSS
since Jan 2026
Page builders
WordPress Block Editor
since Jan 2026
Performance
Priority Hints
since Jan 2026
Programming languages
PHP
since Jan 2026
Web servers
Nginx
since Jan 2026
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Open Page Rank
3.37 / 10 · ranked #1,037,362 of all domains
25 referring domains · OpenPageRank
Infrastructure
- Hosted on LEASEWEB-USA-DAL (172.241.24.147)
- Email: opalstack.com
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 7,677,738
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Bootstrap Feb 2026
- dropped Cloudflare Feb 2026
- dropped Font Awesome Feb 2026
- dropped GitHub Pages Feb 2026
- dropped Google Analytics Feb 2026
- dropped Google Workspace Feb 2026
- dropped GSAP Feb 2026
- dropped Hammer.js Feb 2026
- dropped HTTP/3 Feb 2026
- dropped Modernizr Feb 2026
- dropped Slider Revolution Feb 2026