What powers 
overflow.co.jp?
Last seen Sep 2026 · 41 technologies across 22 categories
Advertising
Affiliate programs
Moshimo
since Sep 2026
Analytics
Google Ads Conversion Tracking
since Sep 2026
Google Analytics
since Jul 2019
Linkedin Insight Tag
since Sep 2026
Microsoft Clarity
since Sep 2026
Authentication
Facebook Login
since Sep 2021
Caching
CDN
Amazon CloudFront
since May 2020
Cloudflare
since Sep 2026
CMS
Databases
MySQL
since Jul 2019
Google Workspace
since Aug 2022
Sendgrid
since Aug 2022
Font scripts
JavaScript libraries
scrollreveal
since May 2022
Splide
since Mar 2023
Marketing automation
HubSpot
since Dec 2024
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since May 2020
Performance
Priority Hints
since Sep 2026
Programming languages
PHP
since Jul 2019
Security
Cloudflare Bot Management
since Sep 2026
HSTS
since Sep 2026
Really Simple SSL & Security
since Dec 2024
reCAPTCHA
since Jul 2019
Static site generator
Astro
since Sep 2026
Tag managers
Google Tag Manager
since Sep 2026
Video players
Web servers
Apache HTTP Server
since Jul 2019
WordPress plugins
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.03 / 10 · ranked #548,722 of all domains
48 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (13.224.125.8)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Apr 2027
- Common Crawl link graph: rank 2,292,949, 3 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted