What powers calendar-center.com?
Last seen Aug 2026 · 17 technologies across 10 categories
A/B Testing
Estore Compare
since Jan 2022
Advertising
Google Ads
since Dec 2022
Yahoo Advertising
since Sep 2022
Analytics
Google Ads Conversion Tracking
since Jan 2022
Google Analytics
since Oct 2020
Google Analytics Enhanced eCommerce
since Sep 2022
CDN
Google Hosted Libraries
since Sep 2022
jsDelivr
since Oct 2024
Ecommerce
Cart Functionality
since Oct 2020
Estore Shopserve
since Jan 2024
Font scripts
Google Font API
since Jan 2024
JavaScript frameworks
JavaScript libraries
Miscellaneous
RSS
since Dec 2022
Web servers
Apache HTTP Server
since Oct 2020
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Aug 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 100% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.42 / 10 · ranked #32,238,784 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 6.4 MB · 215 requests
Homepage as crawled by the HTTP Archive, Aug 2026.