What powers kataren.jp?
Last seen Sep 2026 · 26 technologies across 14 categories
Analytics
CDN
Databases
Firebase
since May 2023
Font scripts
Google Font API
since May 2023
IaaS
Google Cloud
since May 2023
JavaScript frameworks
Miscellaneous
PaaS
Amazon Web Services
since May 2023
Page builders
STUDIO
since May 2023
Payment processors
Programming languages
Node.js
since May 2023
Tag managers
Google Tag Manager
since May 2023
UI frameworks
Tailwind CSS
since May 2023
Webmail
Google Workspace
since Apr 2025
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 75% phone
- 25% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.85 / 10 · ranked #1,881,521 of all domains
18 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 150 ms |
| CLS | 0.4 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 12.4 MB · 84 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (108.139.47.16)
- Email: no MX record returned
- SSL: Amazon Trust Services, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 10,773,925, 4 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| lp.kataren.jp | 15 |
| www.kataren.jp | 14 |
| app.kataren.jp | 13 |