What powers 
japan21.co.jp?
Last seen Sep 2026 · 60 technologies across 24 categories
Advertising
Tapad
since May 2023
Analytics
CDN
Akamai
since Oct 2024
Amazon S3
since Oct 2024
Cloudflare
since Nov 2021
Google Hosted Libraries
since Aug 2022
Unpkg
since Aug 2022
CMS
WordPress
since Jan 2019
Databases
Ecommerce
Cart Functionality
since Aug 2020
Amazon SES
since Aug 2022
MailChimp
since Feb 2024
Font scripts
Google Font API
since Jan 2019
IaaS
Google Cloud
since Dec 2022
JavaScript frameworks
JavaScript libraries
Maps
Google Maps
since Oct 2020
Marketing automation
HubSpot
since Jul 2021
Miscellaneous
PaaS
Amazon Web Services
since Aug 2022
Page builders
STUDIO
since Dec 2022
Payment processors
Stripe
since Jan 2025
Programming languages
Security
Tag managers
Google Tag Manager
since Jan 2019
Web server extensions
Web servers
Nginx
since Aug 2022
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
Jetpack
since Sep 2022
W3 Total Cache
since Nov 2023
WooCommerce Stripe Payment Gateway
since Jan 2025
WP-PageNavi
since Aug 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 *: Allowed (was Restricted)
- Sep 2026 *: Restricted (was Allowed)
- Sep 2026 *: Allowed (was Restricted)
- Aug 2026 *: Restricted (was Allowed)
- Aug 2026 *: Allowed (was Restricted)
AI Crawlers
No AI crawlers blocked
Audience
- 77% desktop
- 24% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.06 / 10 · ranked #530,456 of all domains
48 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.6 MB · 103 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Xserver (183.90.231.85)
- DNS: value-domain.com
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 9,879,035, 13 hosts
- Verified with: Amazon SES, Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| shop.japan21.co.jp | 38 |
| www.japan21.co.jp | 22 |
| mobileye.japan21.co.jp | 18 |
| asterra.japan21.co.jp | 15 |
Full technology history →
Report an incorrect detection
Recent changes
- detected WP-PageNavi Aug 2026
- detected Jetpack Nov 2025