What powers 
crystalvalley.cz?
Last seen Oct 2026 · 22 technologies across 9 categories
Analytics
CDN
cdnjs
since Nov 2021
Cloudflare
since May 2022
jQuery CDN
since Feb 2022
jsDelivr
since Feb 2024
Unpkg
since Jul 2021
Font scripts
Google Font API
since Sep 2020
JavaScript libraries
OWL Carousel
since Sep 2020
Miscellaneous
Programming languages
PHP
since Oct 2021
Security
HSTS
since Jun 2025
UI frameworks
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 72% phone
- 28% desktop
Czechia
Germany
Poland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #362,697 of all domains
86 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 3.5 MB · 95 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Jul 2014 (12 years) via ACTIVE 24, s.r.o., renews Jul 2027
- Hosted on Websupport (37.9.175.205)
- DNS: websupport.cz
- Email: Active 24
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 802,912, 3 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Full technology history →
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