What powers blackboard-k.com?
Last seen Jun 2026 · 21 technologies across 13 categories
Analytics
CMS
WordPress
since Jun 2020
Databases
MySQL
since Jun 2020
Font scripts
Google Font API
since Jun 2020
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Miscellaneous
Page builders
WordPress Block Editor
since Aug 2024
Programming languages
PHP
since Jun 2020
Security
reCAPTCHA
since Apr 2021
Tag managers
Google Tag Manager
since Jun 2020
Web servers
Nginx
since Jun 2020
WordPress plugins
Gutenberg
since Feb 2022
Audience
- 100% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.37 / 10 · ranked #7,789,261 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.3 MB · 69 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| blackboard-k.com | 21 |
| www.blackboard-k.com | 21 |