What powers v-sync.co.jp?
Last seen Aug 2026 · 8 technologies across 7 categories
Analytics
Google Analytics
since Feb 2020
Caching
Varnish
since Mar 2022
CDN
Fastly
since Mar 2022
JavaScript libraries
PaaS
GitHub Pages
since Mar 2022
Web Servers
Google App Engine
since Feb 2020
Webmail
Apple iCloud Mail
since Mar 2023
Google Workspace
since Sep 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.05 / 10 · ranked #1,508,338 of all domains
18 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- CDN: Fastly
- Weight: 1.2 MB · 56 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Onamae.com
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 11,190,169, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| v-sync.co.jp | 7 |
| www.v-sync.co.jp | 3 |