What powers koclass.jp?
Last seen Aug 2026 · 25 technologies across 14 categories
Advertising Networks
Criteo
since Jan 2019
Analytics
Google Analytics
since Jun 2018
CDN
cdnjs
since Nov 2021
Cloudflare
since May 2022
Google Hosted Libraries
since Feb 2022
jsDelivr
since Jul 2020
CMS
Databases
MySQL
since Jun 2018
Font Scripts
Font Awesome
since May 2018
Google Font API
since May 2018
JavaScript Frameworks
GSAP
since May 2018
JavaScript Libraries
Miscellaneous
Open Graph
since Sep 2022
Twitter Emoji (Twemoji)
since Jun 2018
PaaS
Amazon Web Services
since Aug 2022
Programming languages
PHP
since Jun 2018
Tag managers
Google Tag Manager
since Jun 2018
Web Servers
Apache HTTP Server
since May 2018
Nginx
since Jan 2019
Widgets
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 94% phone
- 6% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.16 / 10 · ranked #1,332,181 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 7.2 MB · 72 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ANW-NET-AS AXEL NETWORKS, INC. (115.31.194.39)
- Email: koclass.jp
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Nijimo, Inc., RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 9,632,223, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.koclass.jp | 14 |
| koclass.jp | 13 |
| store.koclass.jp | 8 |
| member.koclass.jp | 5 |