What powers calc.ru?
Last seen Jun 2026 · 13 technologies across 10 categories
Advertising
Analytics
Yandex.Metrika
since Jun 2018
CDN
Cloudflare
since Mar 2019
Google Hosted Libraries
since Feb 2022
JavaScript libraries
Miscellaneous
PWA
since Aug 2022
Programming languages
Security
HSTS
since Apr 2023
Tag managers
Google Tag Manager
since Oct 2021
Web servers
Webmail
Google Workspace
since Aug 2022
Audience
- 75% phone
- 24% desktop
- 1% tablet
Russia
Ukraine
Sweden
Finland
Norway
Bulgaria
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.69 / 10 · ranked #326,239 of all domains
244 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 125 ms |
| CLS | 0.25 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Russian
- Weight: 1.4 MB · 153 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped AdRiver Jun 2026
- dropped MobX Jun 2026
- detected Google Tag Manager May 2026
- detected Prebid May 2026
- dropped Google Tag Manager Apr 2026
- detected MobX Apr 2026
- dropped Prebid Apr 2026
- dropped Adobe Audience Manager Feb 2026
- detected AdRiver Jan 2026
- detected Adobe Audience Manager Dec 2025
- detected Google AdSense Dec 2025
- dropped Adobe Audience Manager Nov 2025
- dropped Preact Nov 2025
- dropped Google AdSense Oct 2025
- dropped PubMatic Sep 2025
- dropped Google Analytics Aug 2025
- dropped reCAPTCHA Aug 2025