What powers kokoro.ac.jp?
Last seen Sep 2026 · 24 technologies across 15 categories
Advertising
Yahoo Advertising
since Sep 2023
Analytics
Facebook Pixel
since Nov 2023
CDN
Google Hosted Libraries
since Feb 2022
CMS
Databases
MySQL
since Jan 2019
Font scripts
Font Awesome
since Jan 2019
JavaScript libraries
Slick
since Jun 2019
Miscellaneous
Page builders
WordPress Block Editor
since Jul 2024
Programming languages
PHP
since Jan 2019
Security
reCAPTCHA
since Sep 2022
Tag managers
Google Tag Manager
since Jan 2019
Video players
YouTube
since Jan 2019
Web servers
Apache HTTP Server
since Jan 2019
WordPress plugins
Smart Slider 3
since Apr 2022
Smash Balloon Instagram Feed
since Feb 2022
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 57% phone
- 43% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.68 / 10 · ranked #2,199,159 of all domains
13 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Oct 2026.
Infrastructure
- Hosted on CPI-NET KDDI Web Communications Inc. (122.200.213.35)
- DNS: cpi.ad.jp
- Email: secure.ne.jp
- Email security: SPF (hard fail), DMARC monitor only
- SSL: JPRS, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 11,977,785, 6 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.kokoro.ac.jp | 21 |
| www.japanese.kokoro.ac.jp | 7 |
| sasebo.kokoro.ac.jp | 4 |