What powers tsubame-map.jp?
Last seen Sep 2026 · 9 technologies across 6 categories
Analytics
Google Analytics
since May 2019
Font scripts
Google Font API
since May 2019
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Closure Library
since Oct 2023
Marked
since Jul 2026
Miscellaneous
Open Graph
since Sep 2022
Video players
YouTube
since Jun 2020
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
- 70% phone
- 30% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.92 / 10 · ranked #1,741,442 of all domains
18 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Google
- Weight: 3.9 MB · 80 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- DNS: Sakura Internet
- Email: tsubame-map.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Google Trust Services, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 10,343,523
- Verified with: Google
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
- detected Marked Jul 2026
- detected YouTube Jul 2026
- detected Closure Library Jan 2026
- dropped Google Sites Dec 2025