What powers dupe.fi?
Last seen Oct 2026 · 33 technologies across 17 categories
Analytics
Vercel Analytics
since Apr 2026
Authentication
NextAuth.js
since Dec 2024
CDN
cdnjs
since Dec 2023
Cloudflare
since Dec 2023
Development
Turbopack
since Jun 2026
Sendgrid
since Apr 2026
JavaScript frameworks
JavaScript graphics
JavaScript Infovis Toolkit
since Sep 2026
JavaScript libraries
Miscellaneous
PaaS
Vercel
since Dec 2024
Page builders
Webflow
since Nov 2023
Performance
Priority Hints
since Dec 2024
Programming languages
Security
Cloudflare Bot Management
since Apr 2026
HSTS
since Dec 2024
UI frameworks
Video players
YouTube
since Apr 2026
Web frameworks
Express
since Dec 2023
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
0.76 / 10 · ranked #17,442,893 of all domains
2 referring domains · OpenPageRank
Page
- Language: English
- CDN: Vercel
- Weight: 3.7 MB · 109 requests
- Structured data: JSON-LD, 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 Amazon Web Services (216.150.1.1)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 307,890, 2 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| dupe.fi | 27 |
| www.dupe.fi | 9 |
Full technology history →
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