What powers calendar1.net?
Last seen Jun 2026 · 9 technologies across 9 categories
Advertising
Google AdSense
since Sep 2019
Analytics
Google Analytics
since Jan 2019
Cookie compliance
Funding Choices
since Dec 2022
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Closure Library
since May 2026
Miscellaneous
PWA
since May 2026
Security
reCAPTCHA
since Jun 2022
Tag managers
Google Tag Manager
since Aug 2021
Web servers
Nginx
since Jan 2019
Audience
- 67% desktop
- 33% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.34 / 10 · ranked #45,249,812 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.1 MB · 149 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- dropped Dropzone Jun 2026
- dropped Font Awesome Jun 2026
- dropped Google Font API Jun 2026
- dropped jQuery Jun 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025