What powers 
justweb.co.jp?
Last seen Sep 2026 · 34 technologies across 19 categories
Analytics
CDN
Amazon CloudFront
since Sep 2025
cdnjs
since Jul 2023
Cloudflare
since Jul 2023
jQuery CDN
since Jul 2023
CMS
WordPress
since Sep 2019
Databases
MySQL
since Sep 2019
Font scripts
Google Font API
since Jul 2023
JavaScript graphics
particles.js
since Jul 2023
JavaScript libraries
Marketing automation
BowNow
since Mar 2025
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Sep 2025
Performance
LazySizes
since Jul 2023
Programming languages
PHP
since Sep 2019
Security
HSTS
since Sep 2025
Tag managers
Google Tag Manager
since Sep 2023
UI frameworks
Video players
YouTube
since Sep 2025
Web servers
Apache HTTP Server
since Sep 2019
Nginx
since Jul 2023
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
Contact Form 7
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
- 89% desktop
- 10% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.83 / 10 · ranked #702,575 of all domains
32 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 1.6 MB · 80 requests
- Structured data: Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Xserver (162.43.116.15)
- DNS: justweb.co.jp
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 10,272,326, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| lp.justweb.co.jp | 21 |
| www.justweb.co.jp | 18 |