What powers lib.nerima.tokyo.jp?
Last seen Aug 2026 · 8 technologies across 7 categories
Analytics
Google Analytics
since Jan 2025
CDN
jsDelivr
since Jan 2025
JavaScript Frameworks
Miscellaneous
Open Graph
since Jan 2025
RSS
since Jan 2025
Programming languages
PHP
since Jun 2018
Security
HSTS
since Sep 2022
Web Servers
Apache HTTP Server
since Sep 2017
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 77% phone
- 21% desktop
- 2% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.72 / 10 · ranked #299,743 of all domains
64 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 1.1 MB · 91 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ARTERIA Networks (202.231.109.40)
- Email: securemx.jp
- Email security: no SPF record, no DMARC record
- SSL: DigiCert, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 2,085,393, 2 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.lib.nerima.tokyo.jp | 8 |
| lib.nerima.tokyo.jp | 7 |