What powers 4seas.vc?
Last seen Sep 2026 · 13 technologies across 11 categories
CDN
Google Cloud CDN
since Apr 2025
Databases
Firebase
since Apr 2025
Font scripts
Google Font API
since Apr 2025
IaaS
Google Cloud
since Apr 2025
JavaScript frameworks
Miscellaneous
HTTP/3
since Apr 2025
Open Graph
since Apr 2025
Page builders
STUDIO
since Apr 2025
Performance
Priority Hints
since Mar 2026
Programming languages
Node.js
since Apr 2025
Tag managers
Google Tag Manager
since Apr 2025
Webmail
Google Workspace
since Mar 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.67 / 10 · ranked #5,159,638 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0 |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Google
- Weight: 5.1 MB · 67 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Google Cloud (34.111.141.225)
- Email: no MX record returned
- SSL: Google Trust Services, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 10,273,112
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted