What powers 
wrtn.jp?
Last seen Sep 2026 · 29 technologies across 12 categories
Advertising
Microsoft Advertising
since Aug 2024
Twitter Ads
since Nov 2024
Analytics
Appsflyer
since Aug 2026
Datadog
since Feb 2024
Google Analytics
since Jun 2023
Microsoft Clarity
since Feb 2024
Mixpanel
since Jun 2023
Naver Analytics
since Feb 2024
TikTok Pixel
since Nov 2024
CDN
Cloudflare
since Aug 2023
jsDelivr
since Sep 2023
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Vercel
since Jun 2023
Programming languages
Node.js
since Jun 2023
Reverse proxies
Envoy
since Apr 2025
Security
Cloudflare Bot Management
since Nov 2024
HSTS
since Jun 2023
Tag managers
Google Tag Manager
since Jan 2024
UI frameworks
NextUI
since Jul 2023
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 67% phone
- 31% desktop
- 2% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.68 / 10 · ranked #774,372 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese (Japan)
- CDN: Cloudflare
- Weight: 1.5 MB · 50 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.26.2.42, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 1,069,162, 6 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| wrtn.jp | 21 |
| sso.wrtn.jp | 19 |
| www.wrtn.jp | 14 |
| line-bot.wrtn.jp | 11 |
| login.wrtn.jp | 11 |
| corp.wrtn.jp | 10 |
Full technology history →
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Recent changes
- detected Appsflyer Aug 2026