What powers 
biwako.ne.jp?
Last seen Sep 2026 · 21 technologies across 14 categories
Analytics
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Operating systems
Page builders
Programming languages
Security
Tag managers
Web server extensions
Web servers
WordPress plugins
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. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 52% phone
- 48% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.63 / 10 · ranked #382,669 of all domains
61 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 10.5 MB · 57 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- びわこインターネット株式会社 (Sawamura Valve on Wikidata)
- Founded: 1943
- Country: Japan
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Sakura Internet (160.16.70.173)
- DNS: biwako.ne.jp
- Email: biwako.ne.jp
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 631,166, 7 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.biwako.ne.jp | 21 |
| ssl.biwako.ne.jp | 1 |
Full technology history →
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Recent changes
- dropped reCAPTCHA Feb 2026
- detected Cloudflare Turnstile Jan 2026