What powers 
npc.co.jp?
Last seen Sep 2026 · 11 technologies across 11 categories
Analytics
Font scripts
Google Font API
since Sep 2022
JavaScript frameworks
GSAP
since Sep 2022
JavaScript graphics
particles.js
since Sep 2022
JavaScript libraries
Swiper
since Oct 2023
Miscellaneous
Open Graph
since Sep 2022
Operating systems
AlmaLinux
since Sep 2022
Security
HSTS
since Sep 2022
Web server extensions
Web servers
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 75% desktop
- 25% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.81 / 10 · ranked #711,865 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 3.4 MB · 80 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Seiko NPC
- Country: Japan
From Wikidata (CC0).
Infrastructure
- DNS: secure.ne.jp
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: JPRS, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 10,364,753
- Verified with: Amazon SES, Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted