What powers 
johas.go.jp?
Last seen Sep 2026 · 121 technologies across 40 categories
Advertising
Affiliate programs
Analytics
Authentication
Caching
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CRM
Databases
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Hosting
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JavaScript frameworks
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Load balancers
Maps
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Miscellaneous
Operating systems
PaaS
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Performance
Photo galleries
Programming languages
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Rich text editors
Security
Tag managers
UI frameworks
Video players
Web frameworks
Web server extensions
Web servers
Webmail
Widgets
WordPress plugins
WordPress themes
AI Crawlers
Restricts 3 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- ClaudeBot Restricted
- GPTBot Restricted
User-request fetchers
- ChatGPT-User Restricted
The other 30 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 chatgpt-user added to robots.txt
- Oct 2026 claudebot added to robots.txt
- Oct 2026 gptbot added to robots.txt
- Sep 2026 robots.txt appeared
- Sep 2026 * added to robots.txt
- Sep 2026 * removed from robots.txt
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
3 of 33 AI crawlers restricted
Audience
- 77% phone
- 20% desktop
- 3% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
7.76 / 10 · ranked #11,757 of all domains
1,246 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 5.7 MB · 134 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
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nara-wu.ac.jp 8 shared
hiroshima-u.ac.jp 17 sharedsaitama-u.ac.jp 9 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- Japan Organization of Occupational Health and Safety
- Founded: 2016
- Country: Japan
From Wikidata (CC0).
Infrastructure
- DNS: Akamai Edge DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: GlobalSign, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 68,741, 185 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.kushirok.johas.go.jp | 25 |
| kumamotok.johas.go.jp | 24 |
| records.johas.go.jp | 23 |
| www.naganos.johas.go.jp | 22 |
| www.toyamah.johas.go.jp | 22 |
| kagoshimas.johas.go.jp | 21 |
| www.hyogos.johas.go.jp | 21 |
| naras.johas.go.jp | 19 |
| osakas.johas.go.jp | 18 |
| www.akitas.johas.go.jp | 18 |
| www.kumamotok.johas.go.jp | 18 |
| www.niigatas.johas.go.jp | 18 |
| cheminfo.johas.go.jp | 17 |
| wakayamas.johas.go.jp | 17 |
| www.aomoris.johas.go.jp | 17 |
| www.tottoris.johas.go.jp | 17 |
| www.kagawas.johas.go.jp | 16 |
| www.kansaih.johas.go.jp | 16 |
| www.kyotos.johas.go.jp | 16 |
| www.shigas.johas.go.jp | 16 |
| www.yamagatas.johas.go.jp | 16 |
| mn.naganos.johas.go.jp | 15 |
| nurse-yamaguchi.johas.go.jp | 15 |
| okayamas.johas.go.jp | 15 |
Full technology history →
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Recent changes
- detected Cloudflare Turnstile Sep 2026
- detected Popup Maker Sep 2026
- detected Salesforce Sep 2026
- dropped Lodash Aug 2026
- detected Laravel Jul 2026
- dropped Themify Builder Jul 2026
- dropped scrollreveal Jun 2026
- detected Vimeo Jun 2026
- dropped Cart Functionality May 2026
- detected Smash Balloon Instagram Feed Apr 2026
- detected web-vitals Feb 2026