What powers preenpower.com?
Last seen Oct 2026 · 11 technologies across 10 categories
Hosting
JavaScript frameworks
Load balancers
Miscellaneous
Operating systems
Performance
Programming languages
UI frameworks
Web servers
Webmail
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
Audience
- 63% desktop
- 37% phone
Taiwan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.41 / 10 · ranked #2,655,427 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- Weight: 1.4 MB · 73 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Preen Power Inc.
- Founded: 1989
- Sector: electricity supply company, power supply
- Country: Taiwan
From Wikidata (CC0).
Infrastructure
- Hosted on Microsoft (20.205.139.223)
- DNS: GoDaddy DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 3072, expires Jan 2027
- Common Crawl link graph: rank 13,348,330, 2 hosts
- Verified with: Google
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
- detected Open Graph Aug 2026
- dropped Bootstrap Jun 2026
- dropped cdnjs Jun 2026
- dropped Cloudflare Jun 2026
- dropped Google Analytics Jun 2026
- dropped Google Tag Manager Jun 2026
- dropped jQuery Jun 2026
- dropped jQuery UI Jun 2026
- dropped Laravel Jun 2026
- dropped Modernizr Jun 2026
- dropped Nginx Jun 2026
- dropped Open Graph Jun 2026
- dropped PhotoSwipe Jun 2026
- dropped PHP Jun 2026
- dropped Plesk Jun 2026
- dropped Popper Jun 2026
- dropped Select2 Jun 2026
- dropped Slick Jun 2026
- dropped SweetAlert Jun 2026
- detected Application Request Routing May 2026
- detected IIS May 2026
- detected Node.js May 2026
- detected Nuxt.js May 2026
- detected Priority Hints May 2026
- detected Tailwind CSS May 2026
- detected Vue.js May 2026
- detected Windows Server May 2026