What powers dolphin-group.co.jp?
Last seen Aug 2026 · 40 technologies across 19 categories
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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
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #490,761 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 5.7 MB · 62 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Dolphi Corporationn
- Founded: 1982
- Industry: Sports and fitness (declares
SportsActivityLocation) - Country: Japan
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on MIRAI Mirai Communication Network Inc. (210.172.223.65)
- DNS: mcnx.jp
- Email: mcnx.jp
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 12,366,818, 20 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| eightbeat.dolphin-group.co.jp | 25 |
| hanamomo.dolphin-group.co.jp | 16 |
| jgolf.dolphin-group.co.jp | 16 |
| jsquare.dolphin-group.co.jp | 15 |
| kaori-yamagata.dolphin-group.co.jp | 15 |
| shinsuke.dolphin-group.co.jp | 15 |
| totonou.dolphin-group.co.jp | 14 |
| dolphin-step.dolphin-group.co.jp | 13 |
| gifu-arena.dolphin-group.co.jp | 11 |
| swimming.dolphin-group.co.jp | 11 |
| kurhaus-iwataki.dolphin-group.co.jp | 10 |
| dolphin-group.co.jp | 9 |
| www.dolphin-group.co.jp | 6 |
Full technology history →
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Recent changes
- detected MetaSlider May 2026
- dropped Autoptimize Feb 2026
- detected Nginx Jan 2026
- detected Site Kit Oct 2025