What powers peopleanalytics-regression-book.org?
Last seen Sep 2026 · 12 technologies across 9 categories
Analytics
Google Analytics
since May 2021
Caching
Varnish
since Aug 2021
CDN
Fastly
since Aug 2021
Font scripts
JavaScript libraries
Clipboard.js
since Mar 2021
Tippy.js
since Dec 2025
Miscellaneous
Open Graph
since Sep 2022
Popper
since Dec 2025
PaaS
Amazon Web Services
since Mar 2021
GitHub Pages
since Aug 2021
Security
HSTS
since Dec 2025
UI frameworks
Bootstrap
since Mar 2021
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
2.86 / 10 · ranked #1,846,335 of all domains
17 referring domains · OpenPageRank
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Amazon Route 53
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,244,148, 3 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| peopleanalytics-regression-book.org | 12 |
| dev.peopleanalytics-regression-book.org | 10 |
Full technology history →
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Recent changes
- dropped cdnjs Feb 2026
- dropped Cloudflare Feb 2026
- dropped D3 Feb 2026
- dropped Font Awesome Feb 2026
- dropped Google Font API Feb 2026
- dropped jQuery Feb 2026
- dropped MathJax Feb 2026
- dropped Plotly Feb 2026