What powers earth-core.jp?
Last seen Jun 2026 · 6 technologies across 5 categories
JavaScript libraries
PaaS
Amazon Web Services
since Aug 2022
Programming languages
PHP
since Aug 2022
Web servers
Apache HTTP Server
since Aug 2022
Webmail
RoundCube
since Aug 2022
Audience
- 53% desktop
- 47% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.11 / 10 · ranked #1,410,089 of all domains
17 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 250 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 0.2 MB · 24 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| webmail.earth-core.jp | 6 |
| mailtool.earth-core.jp | 3 |