What powers retro-kon.com?
Last seen Sep 2026 · 19 technologies across 14 categories
Analytics
CDN
Google Hosted Libraries
since Sep 2023
CMS
WordPress
since Jun 2023
Databases
MySQL
since Jun 2023
Hosting
Sakura Internet
since Jun 2023
JavaScript libraries
Miscellaneous
Open Graph
since Jun 2023
Programming languages
PHP
since Jun 2023
Security
HSTS
since Jun 2023
Tag managers
Google Tag Manager
since Jun 2023
UI frameworks
UIKit
since Jun 2023
Video players
YouTube
since Apr 2024
Web servers
Nginx
since Jun 2023
Widgets
SnapWidget
since Jan 2025
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 90% phone
- 10% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.52 / 10 · ranked #6,320,166 of all domains
12 referring domains · OpenPageRank
Page
- Language: Japanese
- Weight: 33.0 MB · 176 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (153.127.7.29, IPv6)
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 30,134,090
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected TikTok Pixel Jul 2026