What powers seibu-k.co.jp?
Last seen Jun 2026 · 18 technologies across 10 categories
Advertising
Google Ads
since Dec 2022
Yahoo Advertising
since Apr 2022
Analytics
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Jan 2019
Microsoft Clarity
since Aug 2025
CDN
Google Hosted Libraries
since Feb 2022
Font scripts
Typekit
since Dec 2023
JavaScript libraries
Marketing automation
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
PaaS
Amazon Web Services
since Jan 2019
Tag managers
Google Tag Manager
since Jan 2019
Web servers
Apache HTTP Server
since Jan 2019
Nginx
since Dec 2023
Audience
- 92% phone
- 6% desktop
- 2% tablet
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.09 / 10 · ranked #1,437,300 of all domains
12 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.8 MB · 105 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.seibu-k.co.jp | 16 |
| aques.seibu-k.co.jp | 13 |
Full technology history →
Report an incorrect detection
Recent changes
- detected core-js Apr 2026
- detected Facebook Pixel Apr 2026
- dropped Amazon EC2 Feb 2026
- dropped OpenSSL Feb 2026
- dropped PHP Feb 2026
- dropped Adobe Audience Manager Sep 2025
- dropped core-js Sep 2025
- dropped Criteo Sep 2025
- dropped Facebook Pixel Sep 2025
- detected Microsoft Clarity Aug 2025