What powers pcosa.com.pl?
Last seen Sep 2026 · 18 technologies across 11 categories
Analytics
CDN
Cookie compliance
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
Security
UI frameworks
Video players
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 *: Restricted (was Allowed)
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 70% phone
- 30% desktop
Poland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.24 / 10 · ranked #1,212,676 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Polish
- CDN: Cloudflare
- Weight: 7.5 MB · 80 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- PCO
- Founded: 1976
- Sector: optoelectronics industry
- Country: Poland
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.21.67.60, IPv6)
- DNS: Cloudflare DNS
- Email: pcosa.com.pl
- Email security: SPF (hard fail), DMARC reject
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 3,459,449, 2 hosts
- Verified with: Apple Business, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- dropped Nginx Apr 2026