What powers 
zwtk.jp?
Last seen Sep 2026 · 23 technologies across 14 categories
Analytics
Google Analytics
since Mar 2021
CMS
Databases
MySQL
since Mar 2021
Font scripts
Google Font API
since Mar 2021
Hosting
Xserver
since Aug 2022
JavaScript libraries
OWL Carousel
since Mar 2021
Swiper
since Sep 2022
Maps
Google Maps
since Dec 2022
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Page builders
Programming languages
PHP
since Mar 2021
Video players
YouTube
since Mar 2021
Web servers
Nginx
since Mar 2021
WordPress plugins
WordPress themes
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 75% desktop
- 25% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.54 / 10 · ranked #856,373 of all domains
45 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.4 s |
| INP | 50 ms |
| CLS | 0.1 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 7.0 MB · 192 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Xserver (183.90.253.48)
- DNS: Xserver
- Email: zwtk.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 10,020,137
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted