What powers 221b-j.net?
Last seen Jun 2026 · 30 technologies across 19 categories
Advertising
Amazon Advertising
since Sep 2021
Twitter Ads
since Sep 2021
Analytics
Google Analytics
since May 2019
Blogs
Wix
since May 2019
CDN
Cloudflare
since Mar 2025
Google Hosted Libraries
since Aug 2022
CMS
Databases
MySQL
since Sep 2021
Font scripts
Twitter Emoji (Twemoji)
since Sep 2021
Hosting
Xserver
since Aug 2022
Issue Trackers
Sentry
since Nov 2019
JavaScript Frameworks
JavaScript Libraries
Miscellaneous
Performance
Priority Hints
since Aug 2023
Programming languages
PHP
since Sep 2021
Security
Cloudflare Bot Management
since Mar 2025
Web servers
Nginx
since Sep 2021
Webmail
Google Workspace
since Aug 2022
Widgets
WordPress plugins
Smart Slider 3
since Aug 2022
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.52 / 10 · ranked #23,893,700 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.8 MB · 54 requests
- WordPress theme: vanillacity · all themes
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| 221b-j.net | 21 |
| www.221b-j.net | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Twitter Emoji (Twemoji) Dec 2025
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025