What powers zemeraj.cz?

Last seen Sep 2026 · 31 technologies across 16 categories

Analytics

Google Analytics
since Sep 2019

Authentication

Facebook Login
since Jul 2021

CMS

WordPress v6.8.8
since Sep 2019

Databases

MySQL
since Sep 2019

Font scripts

Font Awesome
since Sep 2019
Google Font API
since Sep 2019

JavaScript frameworks

Backbone.js v1.6.0
since Jun 2025
React v18.3.1
since Sep 2025

JavaScript libraries

core-js v3.39.0
since Feb 2023
jQuery v3.7.1
since Sep 2019
jQuery Migrate v3.4.1
since Sep 2019
jQuery UI v1.13.3
since Sep 2020
Modernizr v2.6.2
since Sep 2019
Moment.js v2.29.4
since Sep 2020
OWL Carousel
since Sep 2019
prettyPhoto
since Jul 2021
Underscore.js v1.13.7
since Dec 2024

Miscellaneous

HTTP/3
since Apr 2026
RSS
since Dec 2022

Page builders

WordPress Block Editor
since Sep 2025

Programming languages

PHP
since Sep 2019

Security

HSTS
since Sep 2022

Tag managers

Google Tag Manager
since Sep 2019

UI frameworks

Bootstrap
since Sep 2019

Video players

Plyr
since Sep 2025

Web servers

Nginx
since Sep 2020

WordPress plugins

TablePress
since May 2022
The Events Calendar
since Jun 2022
Translate WordPress v6.0.20
since May 2022
WooCommerce v10.2.4
since Sep 2019

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

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • 91% phone
  • 9% desktop
  • Czechia

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

Open Page Rank

3.34 / 10 · ranked #1,082,213 of all domains

36 referring domains · OpenPageRank

Core Web Vitals

LCP5.1 s
INP100 ms
CLS0.7
TTFB2500 ms

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: Czech
  • Weight: 17.0 MB · 316 requests
  • WordPress theme: united-pro · all themes

Homepage as crawled by the HTTP Archive, Sep 2026.

Infrastructure

  • Hosted on IGNUM-AS Czech Republic (62.109.154.162, IPv6)
  • Email: ebola.cz
  • Email security: SPF (soft fail), no DMARC record
  • SSL: Let's Encrypt, RSA 2048, expires Nov 2026
  • Common Crawl link graph: rank 3,176,493, 2 hosts

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

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