What powers johncoffey.nl?
Last seen Sep 2026 · 33 technologies across 19 categories
Analytics
CDN
CMS
Databases
Development
Font scripts
Hosting panels
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Performance
Programming languages
Security
Tag managers
UI frameworks
Video players
Web servers
Widgets
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 Sep 2026. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.40 / 10 · ranked #1,010,995 of all domains
39 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 2.5 MB · 85 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- John Coffey
- Founded: 2002
- Country: Netherlands
From Wikidata (CC0).
Infrastructure
- Hosted on Amazon Web Services (216.198.79.1)
- DNS: Vercel
- Email: ImprovMX
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 3,481,963, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| johncoffey.nl | 33 |
| www.johncoffey.nl | 22 |
Full technology history →
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Recent changes
- detected HSTS Sep 2026
- detected Next.js Sep 2026
- detected Next.js App Router Sep 2026
- detected Node.js Sep 2026
- detected Priority Hints Sep 2026
- detected React Sep 2026
- detected Turbopack Sep 2026
- detected Vercel Sep 2026
- detected Vercel Analytics Sep 2026
- detected Vercel Speed Insights Sep 2026
- detected Webpack Sep 2026