What powers sex21.cz?

Last seen Aug 2026 · 14 technologies across 9 categories

Analytics

Google Analytics
since Jun 2020

Font scripts

Google Font API
since Dec 2021

Issue trackers

Sentry
since Aug 2020

JavaScript frameworks

Backbone.js v1.4.1
since Jun 2020
React
since Dec 2021
styled-components v5.3.5
since Dec 2021

JavaScript libraries

Hammer.js v2.0.7
since Jun 2020
jQuery v3.7.1
since Jun 2020
Underscore.js
since Jun 2020

Miscellaneous

Open Graph
since Sep 2022
Websocket
since Jul 2020

Performance

Priority Hints
since Aug 2024

Tag managers

Google Tag Manager
since Jun 2020

Video players

DPlayer v6.9.1
since Feb 2025

AI Crawlers

robots.txt could not be read at the last check (Aug 2026), so its policy is unknown.

  • robots.txt not checked
  • llms.txt not checked
  • ai.txt not checked

See who blocks each AI crawler across the web

AI Crawlers

Policy unknown

Full breakdown

Open Page Rank

2.51 / 10 · ranked #2,476,848 of all domains

11 referring domains · OpenPageRank

Page

  • Language: English
  • CDN: Vercel
  • Weight: 3.7 MB · 139 requests
  • Structured data: OpenGraph

Homepage as crawled by the HTTP Archive, Aug 2026.

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