What powers ocspektrum.cz?
Last seen Sep 2026 · 16 technologies across 12 categories
CDN
Cloudflare
since Feb 2022
Hosting panels
Plesk
since May 2021
Issue trackers
Sentry
since Jul 2021
JavaScript libraries
Miscellaneous
Performance
Priority Hints
since Sep 2026
Programming languages
PHP
since May 2021
Security
Cloudflare Bot Management
since Feb 2022
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since May 2021
Web frameworks
Web servers
Nginx
since May 2021
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.26 / 10 · ranked #2,973,533 of all domains
13 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 2.0 MB · 66 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Spektrum
- Industry: Retail (declares
ShoppingCenter) - Country: Czech Republic
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on VSHOSTING (185.59.208.188)
- DNS: forpsi.cz
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- Common Crawl link graph: rank 41,866,555
- Verified with: Meta Business, Microsoft 365
DNS records as swept Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Priority Hints Sep 2026