What powers 
gas-kagakukan.com?
Last seen Sep 2026 · 5 technologies across 4 categories
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Security
HSTS
since Sep 2022
Web servers
Nginx
since Jan 2019
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
- 86% phone
- 14% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.55 / 10 · ranked #842,981 of all domains
96 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.3 MB · 97 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Gas Science Museum
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on AIR Air Internet Service Co.,Ltd. (210.166.76.103)
- DNS: air.ne.jp
- Email: no MX record returned
- SSL: DigiCert, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 8,846,355, 2 hosts
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 Google Analytics May 2026
- dropped Google Tag Manager May 2026
- dropped OneTrust May 2026