What powers 
tsukuruba.com?
Last seen Sep 2026 · 19 technologies across 14 categories
Analytics
CDN
Databases
Font scripts
IaaS
JavaScript frameworks
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Tag managers
Webmail
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 83% desktop
- 17% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #332,551 of all domains
160 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 1.9 MB · 22 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- 株式会社ツクルバ
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Google (216.239.32.21, IPv6)
- DNS: Onamae.com
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Google Trust Services, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 1,886,727, 4 hosts
- Verified with: Apple Business, Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| recruit.tsukuruba.com | 16 |
| tsukuruba.com | 7 |
| studios.tsukuruba.com | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Priority Hints May 2026
- dropped core-js Apr 2026