What powers s4-energy.com?
Last seen Sep 2026 · 22 technologies across 13 categories
Analytics
CDN
CMS
Font scripts
JavaScript frameworks
JavaScript libraries
Maps
Miscellaneous
Programming languages
Security
SEO
Web frameworks
Webmail
AI Crawlers
Blocks 3 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Google-Extended Blocked
- GPTBot Blocked
Search and AI assistants
- PerplexityBot Blocked
The other 30 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
3 of 33 AI crawlers blocked
Open Page Rank
2.48 / 10 · ranked #2,529,971 of all domains
35 referring domains · OpenPageRank
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.8 MB · 30 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (94.247.142.1)
- DNS: wldns.nl
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC reject
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 12,666,704, 3 hosts
- Verified with: Apple Business, Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Cloudflare Turnstile Feb 2026
- dropped Google Hosted Libraries Feb 2026
- dropped jQuery Feb 2026
- dropped reCAPTCHA Feb 2026
- dropped Webflow Feb 2026
- dropped Webpack Feb 2026
- detected Alpine.js Jan 2026
- detected Apple iCloud Mail Jan 2026
- detected Craft CMS Jan 2026
- detected GSAP Jan 2026
- detected Leaflet Jan 2026
- detected lit-element Jan 2026
- detected lit-html Jan 2026
- detected LottieFiles Jan 2026
- detected Mapbox GL JS Jan 2026
- detected Mapbox.js Jan 2026
- detected PHP Jan 2026
- detected PWA Jan 2026
- detected SEOmatic Jan 2026
- detected Swiper Jan 2026
- detected Unpkg Jan 2026
- detected Yii Jan 2026