What powers challenge-auto.jp?
Last seen Aug 2026 · 20 technologies across 13 categories
Analytics
Google Analytics
since May 2019
CMS
WordPress
since Aug 2026
Databases
MySQL
since Aug 2026
Font scripts
Google Font API
since Aug 2026
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Aug 2026
Programming languages
Security
Tag managers
Google Tag Manager
since Aug 2026
Web servers
Apache HTTP Server
since May 2019
Widgets
Slider Revolution
since Aug 2026
WordPress plugins
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
1.95 / 10 · ranked #3,724,147 of all domains
6 referring domains · OpenPageRank
Infrastructure
- Hosted on Sakura Internet (133.125.58.157)
- DNS: Sakura Internet
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 17,533,494
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 Contact Form 7 Aug 2026
- detected core-js Aug 2026
- detected Google Font API Aug 2026
- detected Google Tag Manager Aug 2026
- detected Isotope Aug 2026
- detected jPlayer Aug 2026
- detected jQuery Aug 2026
- detected jQuery Migrate Aug 2026
- detected MySQL Aug 2026
- detected Open Graph Aug 2026
- detected prettyPhoto Aug 2026
- detected reCAPTCHA Aug 2026
- detected Slider Revolution Aug 2026
- detected Swiper Aug 2026
- detected WordPress Aug 2026