What powers opentechlab.cz?

Last seen Oct 2026 · 9 technologies across 9 categories

Analytics

Google Analytics
since Nov 2024

CDN

Amazon S3
since Sep 2026

Font scripts

Google Font API
since Nov 2024

JavaScript frameworks

Socket.io
since Jan 2025

Miscellaneous

HTTP/3
since Sep 2026

PaaS

Amazon Web Services
since Sep 2026

Programming languages

Node.js
since Jan 2025

Video players

YouTube
since Sep 2026

Web servers

Apache Traffic Server
since Dec 2025

AI Crawlers

Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Standards: llms.txt

Full breakdown

Audience

  • Czechia

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

1.57 / 10 · ranked #5,933,912 of all domains

5 referring domains · OpenPageRank

Core Web Vitals

LCP0.7 s
CLS0
TTFB200 ms

Real user p75, Chrome UX Report, Sep 2026.

Page

  • Language: English
  • Weight: 0.3 MB · 6 requests

Homepage as crawled by the HTTP Archive, Oct 2026.

Infrastructure

  • Hosted on WEDOS-GLOBAL (185.8.237.11)
  • DNS: wedos.com
  • Email: wedos.net
  • Email security: no SPF record, no DMARC record, DNSSEC signed
  • SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
  • Common Crawl link graph: rank 19,549,228, 4 hosts
  • Verified with: Google

DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted

Subdomains

HostTechs
ncm.opentechlab.cz 9
hokus.opentechlab.cz 7
www.opentechlab.cz 4

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