What powers granstra.com?
Last seen Sep 2026 · 13 technologies across 10 categories
Analytics
CDN
Font scripts
IaaS
JavaScript libraries
Miscellaneous
Performance
Tag managers
UI frameworks
Webmail
AI Crawlers
Restricts 4 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- CCBot Restricted
- ClaudeBot Restricted
- GPTBot Restricted
User-request fetchers
- ChatGPT-User Restricted
The other 29 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
4 of 33 AI crawlers restricted
Audience
- 59% desktop
- 41% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.14 / 10 · ranked #1,355,990 of all domains
41 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 5.3 MB · 225 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Google (216.239.32.21, IPv6)
- DNS: Google Cloud DNS
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Google Trust Services, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 12,371,602, 2 hosts
- Verified with: Google, Meta Business
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted