What powers vvvf21851.jp?
Last seen Sep 2026 · 16 technologies across 13 categories
Advertising
Google AdSense
since Apr 2019
Twitter Ads
since Jul 2021
Affiliate programs
A8.net
since Jul 2021
Analytics
Google Analytics
since Apr 2019
Authentication
Google Sign-in
since Feb 2021
CDN
Cloudflare
since Dec 2024
Font scripts
Google Font API
since Nov 2025
PaaS
Amazon Web Services
since Aug 2022
Performance
Priority Hints
since Sep 2026
Security
Cloudflare Bot Management
since Dec 2024
reCAPTCHA
since Apr 2022
Tag managers
Google Tag Manager
since Apr 2019
Video players
YouTube
since Apr 2019
Web servers
Widgets
Twitter
since May 2020
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 57% phone
- 43% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.18 / 10 · ranked #10,192,850 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0.15 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 6.6 MB · 167 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on BCS-1 (199.127.171.17)
- DNS: Amazon Route 53
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 70,617,560
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Snowplow Analytics Jul 2026
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Snowplow Analytics Apr 2026
- dropped Snowplow Analytics Feb 2026
- detected Snowplow Analytics Dec 2025
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- detected Google Font API Nov 2025