What powers calcudoku.org?

Last seen Jun 2026 · 33 technologies across 15 categories

Advertising

Amazon Advertising
since Feb 2025
AppNexus
since Nov 2021
Criteo
since Mar 2023
Google Publisher Tag
since May 2021
GumGum
since Jun 2026
ID5 v1.0.97
since Oct 2023
Mediavine
since May 2026
OpenX
since Mar 2023
Prebid v11.11.0
since Mar 2023
PubMatic
since Jul 2021
Rubicon Project
since Jul 2021
TripleLift
since Apr 2023

Analytics

comScore
since May 2026
Google Analytics
since Jun 2018
Snowplow Analytics
since Mar 2023

CDN

Amazon S3
since May 2026
Cloudflare
since Aug 2023
Google Hosted Libraries
since Feb 2022
jsDelivr
since Mar 2023

JavaScript frameworks

Socket.io
since Apr 2018

JavaScript libraries

jQuery v1.11.1
since Apr 2018

Load balancers

Amazon ALB
since Jun 2023

Marketing automation

Mautic
since May 2026

Miscellaneous

Open Graph
since Nov 2025

PaaS

Amazon Web Services
since Jun 2023

Programming languages

Node.js
since Jun 2018
PHP v8.3.25
since Jun 2018

Security

Cloudflare Bot Management
since Aug 2023
reCAPTCHA
since Mar 2023

Segmentation

Adobe Audience Manager
since Dec 2023

Tag managers

Google Tag Manager
since Apr 2020

Web server extensions

OpenSSL v3.2.2
since Oct 2025

Web servers

Apache HTTP Server v2.4.62
since Apr 2018

Audience

  • 51% desktop
  • 38% phone
  • 11% tablet
  • Japan
  • Netherlands
  • United States
  • India

Countries where the site has Chrome traffic, strongest markets first.

Open Page Rank

2.22 / 10 · ranked #3,052,658 of all domains

17 referring domains · OpenPageRank

Core Web Vitals

LCP2.2 s
INP225 ms
CLS0
TTFB400 ms

Real user p75, Chrome UX Report, Jun 2026.

Page

  • Language: English
  • Weight: 2.9 MB · 1,908 requests
  • Structured data: OpenGraph

Homepage as crawled by the HTTP Archive, Jul 2026.

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