What powers r-ohkawara.com?
Last seen Sep 2026 · 14 technologies across 11 categories
Analytics
Google Analytics
since Jan 2022
CDN
Amazon CloudFront
since Jan 2022
JavaScript libraries
Miscellaneous
HTTP/3
since Dec 2022
PaaS
Amazon Web Services
since Jan 2022
Programming languages
PHP
since Jan 2022
Tag managers
Google Tag Manager
since Jan 2022
UI frameworks
Bootstrap
since Jan 2022
Video players
YouTube
since Jan 2023
Web frameworks
CakePHP
since Jan 2022
Web servers
Nginx
since Feb 2026
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 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
0.34 / 10 · ranked #45,086,017 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 50.1 MB · 195 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 大河原建設株式会社
- Industry: Real estate (declares
RealEstateAgent)
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Amazon Web Services (75.2.50.204)
- DNS: Amazon Route 53
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: Amazon Trust Services, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 70,683,909
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Apache HTTP Server Mar 2026
- dropped Debian Mar 2026
- detected Nginx Feb 2026