What powers jsdb.jp?
Last seen Oct 2026 · 18 technologies across 12 categories
Advertising
Twitter Ads
since Jul 2021
Analytics
Authentication
Facebook Login
since Jul 2021
CDN
cdnjs
since Jul 2022
Cloudflare
since Jul 2022
Google Hosted Libraries
since Jul 2022
jsDelivr
since Jun 2021
Font scripts
Google Font API
since Jul 2019
Hosting
Xserver
since Dec 2023
JavaScript frameworks
JavaScript libraries
Programming languages
PHP
since Sep 2021
Security
Cloudflare Bot Management
since Sep 2025
Web servers
Nginx
since Jul 2019
Widgets
Twitter
since Jul 2020
AI Crawlers
robots.txt could not be read at the last check (Nov 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 100% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.71 / 10 · ranked #306,063 of all domains
53 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| CLS | 0.05 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Japanese
- Weight: 14.0 MB · 142 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Xserver (202.233.66.5)
- DNS: Xserver
- Email: jsdb.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 99,719, 4 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| jsdb.jp | 15 |
| www.jsdb.jp | 15 |
| www2.jsdb.jp | 10 |