What powers cetris.cz?
Last seen Aug 2026 · 21 technologies across 14 categories
Analytics
Google Analytics
since Jan 2019
Caching
WordPress Super Cache
since Dec 2025
CMS
WordPress
since Nov 2025
Databases
MySQL
since Nov 2025
Font scripts
Google Font API
since Nov 2025
Twitter Emoji (Twemoji)
since Dec 2025
JavaScript libraries
Isotope
since Nov 2025
Miscellaneous
Open Graph
since Sep 2022
RSS
since Nov 2025
Performance
Priority Hints
since Nov 2025
Photo galleries
PhotoSwipe
since Nov 2025
Programming languages
PHP
since Jan 2019
Security
HSTS
since Sep 2022
Web servers
Nginx
since Feb 2019
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 57% phone
- 43% desktop
Czechia
Poland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.42 / 10 · ranked #983,164 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech (Czechia)
- Weight: 2.1 MB · 117 requests
- WordPress theme: dt-the7 (child: the7-child) · all themes
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on BLUETONE-AS The Czech Republic (85.207.31.138)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Oct 2026
- Common Crawl link graph: rank 6,918,842, 3 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Bootstrap Dec 2025
- dropped cdnjs Dec 2025
- dropped Cloudflare Dec 2025
- dropped Cloudflare Bot Management Dec 2025
- dropped FancyBox Dec 2025
- detected Google Analytics Dec 2025
- dropped Google Tag Manager Dec 2025
- dropped Nette Framework Dec 2025
- dropped PWA Dec 2025
- dropped Svelte Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025
- detected WordPress Super Cache Dec 2025
- detected Elementor Nov 2025
- detected Google Font API Nov 2025
- detected Isotope Nov 2025
- detected jQuery Migrate Nov 2025
- detected jQuery UI Nov 2025
- detected MySQL Nov 2025
- detected PhotoSwipe Nov 2025
- detected Priority Hints Nov 2025
- detected RSS Nov 2025
- detected WooCommerce Nov 2025
- detected WordPress Nov 2025