What powers 
premiumwater-hd.co.jp?
Last seen Sep 2026 · 19 technologies across 13 categories
Analytics
Google Analytics
since Apr 2021
CDN
cdnjs
since Jun 2026
Cloudflare
since Jun 2026
jQuery CDN
since Jun 2026
jsDelivr
since Jun 2026
Unpkg
since Jun 2026
Amazon SES
since Jan 2024
Font scripts
Google Font API
since Jan 2019
Hosting panels
Plesk
since Jun 2026
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Aug 2022
Security
HSTS
since Aug 2026
Tag managers
Google Tag Manager
since Jul 2021
Web servers
Nginx
since Jan 2019
Webmail
Google Workspace
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 57% desktop
- 43% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.94 / 10 · ranked #620,437 of all domains
45 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 6.3 MB · 108 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Premium Water Holdings, Inc.
- Founded: 2006
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on TSUKAERUNET Tsukaeru.net, Web Hosting Company, Japan (121.50.42.158)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 9,878,823
- Verified with: GlobalSign, Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped PHP Sep 2026
- detected HSTS Aug 2026
- dropped Apache HTTP Server Jul 2026
- dropped Axios Jul 2026
- dropped Google Hosted Libraries Jul 2026
- dropped Moment.js Jul 2026
- dropped PWA Jul 2026
- dropped Ubuntu Jul 2026
- dropped Vue.js Jul 2026
- detected cdnjs Jun 2026
- detected Cloudflare Jun 2026
- detected GSAP Jun 2026
- detected jQuery CDN Jun 2026
- detected jsDelivr Jun 2026
- detected Lenis Jun 2026
- detected Nginx Jun 2026
- detected PHP Jun 2026
- detected Plesk Jun 2026
- detected Swiper Jun 2026
- detected Unpkg Jun 2026