What powers jcs-web.com?
Last seen Oct 2026 · 20 technologies across 12 categories
Analytics
Cloudflare Browser Insights
since Jul 2026
Google Analytics
since Mar 2020
CDN
Databases
MySQL
since Mar 2020
Ecommerce
Cart Functionality
since Aug 2020
Font scripts
Google Font API
since Jul 2020
JavaScript frameworks
JavaScript libraries
Miscellaneous
HTTP/3
since Jul 2026
Payment processors
Programming languages
PHP
since Mar 2020
Security
HSTS
since Jul 2026
UI frameworks
Bootstrap
since Mar 2020
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 * removed from robots.txt
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.39 / 10 · ranked #37,670,749 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.9 s |
| CLS | 0.1 |
| TTFB | 3400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Cloudflare
- Weight: 1.3 MB · 260 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.39.114, IPv6)
- DNS: Cloudflare DNS
- Email: jcs-web.com
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 70,068,049, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.jcs-web.com | 19 |
| shop.jcs-web.com | 16 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Nginx Aug 2026
- detected Cloudflare Browser Insights Jul 2026
- detected HSTS Jul 2026
- detected HTTP/3 Jul 2026
- dropped Braintree Dec 2025