What powers sera.co.jp?
Last seen Sep 2026 · 20 technologies across 14 categories
Analytics
Google Analytics
since May 2019
Authentication
Facebook Login
since Jun 2021
CDN
Google Hosted Libraries
since Feb 2022
CMS
Databases
MySQL
since May 2019
Font scripts
Google Font API
since May 2019
JavaScript libraries
Miscellaneous
RSS
since Dec 2022
Programming languages
Security
reCAPTCHA
since Aug 2023
Video players
Flowplayer
since Apr 2022
YouTube
since May 2019
Web servers
Apache HTTP Server
since May 2019
WordPress plugins
WordPress themes
Twenty Fourteen
since Feb 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
- 50% desktop
- 50% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.31 / 10 · ranked #8,523,595 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 5.6 MB · 146 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on GMO Internet (157.7.107.47)
- DNS: Lolipop
- Email: no MX record returned, SPF names Lolipop
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Sep 2026
- Common Crawl link graph: rank 36,514,942
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted