What powers b4a.co.jp?
Last seen Jun 2026 · 32 technologies across 18 categories
Advertising
Linkedin Ads
since Aug 2025
Analytics
Google Analytics
since Jun 2022
Microsoft Clarity
since Sep 2024
CDN
Amazon S3
since Aug 2025
Cloudflare
since Aug 2025
Google Cloud CDN
since Sep 2024
jsDelivr
since Jun 2026
CMS
WordPress
since Jun 2026
Databases
Font scripts
Google Font API
since Jun 2022
Hosting
Kinsta
since Jun 2026
Sakura Internet
since Aug 2022
IaaS
Google Cloud
since Aug 2022
JavaScript frameworks
JavaScript libraries
Marketing automation
Salesforce Marketing Cloud Account Engagement
since Sep 2024
Miscellaneous
HTTP/3
since Sep 2024
Open Graph
since Oct 2022
PaaS
Amazon Web Services
since Aug 2025
Page builders
STUDIO
since Aug 2022
Programming languages
Security
Tag managers
Google Tag Manager
since Jun 2022
Webmail
Google Workspace
since Aug 2022
Audience
- 90% desktop
- 10% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.43 / 10 · ranked #975,240 of all domains
32 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- CDN: Google
- Weight: 4.3 MB · 219 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| jobs.b4a.co.jp | 20 |
| www.b4a.co.jp | 18 |
| service.b4a.co.jp | 16 |
| corp.b4a.co.jp | 14 |
Full technology history →
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Recent changes
- dropped Priority Hints Jun 2026
- detected hCaptcha Oct 2025