What powers 
self.systems?
Last seen Sep 2026 · 35 technologies across 19 categories
Analytics
CDN
CMS
Databases
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Security
Tag managers
UI frameworks
Web servers
Webmail
WordPress plugins
AI Crawlers
Does not block any of the 33 AI crawlers we track in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Allowed
- Bytespider Allowed
- ClaudeBot Allowed
- cohere-training-data-crawler Allowed
- FacebookBot Allowed
- Google-Extended Allowed
- GPTBot Allowed
- meta-externalagent Allowed
Search and AI assistants
- Amazonbot Allowed
- Applebot Allowed
- Claude-SearchBot Allowed
- OAI-SearchBot Allowed
- PerplexityBot Allowed
User-request fetchers
- ChatGPT-User Allowed
- Perplexity-User Allowed
The other 18 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 87% desktop
- 13% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.64 / 10 · ranked #380,561 of all domains
86 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.7 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 3100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 12.6 MB · 152 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- SELF株式会社
- Profiles: Facebook
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on GMO Internet (157.7.44.214)
- DNS: Muumuu Domain
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 463,532, 6 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Cloudflare Mar 2026
- detected Cloudflare Bot Management Mar 2026
- detected Linkedin Insight Tag Mar 2026