What powers 
jcity.co.jp?
Last seen Sep 2026 · 8 technologies across 7 categories
Analytics
CDN
Google Hosted Libraries
since Feb 2022
Font scripts
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Programming languages
Java
since Feb 2020
Web servers
Nginx
since Jun 2021
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
Policy unknown
Audience
- 52% desktop
- 48% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
6.12 / 10 · ranked #101,918 of all domains
119 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 2.0 MB · 45 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on IIJ Internet Initiative Japan Inc. (220.100.237.94)
- DNS: jcity.com
- Email: nospamcloud.com
- Email security: no SPF record, no DMARC record
- SSL: JPRS, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 118,766, 5 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| asp.jcity.co.jp | 8 |
| www.jcity.co.jp | 7 |