What powers seibu-kaihatu.jp?
Last seen Sep 2026 · 13 technologies across 10 categories
Analytics
Google Analytics
since May 2019
CDN
Amazon CloudFront
since May 2019
JavaScript libraries
Miscellaneous
HTTP/3
since Dec 2022
PaaS
Amazon Web Services
since May 2019
Programming languages
PHP
since Aug 2022
Tag managers
Google Tag Manager
since May 2019
UI frameworks
Bootstrap
since Aug 2022
Web frameworks
CakePHP
since Aug 2022
Web servers
Nginx
since Feb 2026
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.90 / 10 · ranked #14,638,680 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0.05 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 8.8 MB · 122 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- 西部開発
- Industry: Real estate (declares
RealEstateAgent)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Amazon Web Services (54.65.61.239)
- DNS: technowave.ad.jp
- Email: aams6.jp
- Email security: no SPF record, no DMARC record
- SSL: Amazon Trust Services, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 64,065,876
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped Apache HTTP Server Mar 2026
- dropped Debian Mar 2026
- detected Nginx Feb 2026