What powers 
iwakioptic.co.jp?
Last seen Oct 2026 · 11 technologies across 6 categories
Advertising
Google Ads
since Dec 2022
Yahoo Advertising
since Apr 2022
Analytics
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Jan 2019
Authentication
Facebook Login
since Jul 2021
JavaScript libraries
Tag managers
Google Tag Manager
since Jan 2019
Web servers
Apache HTTP Server
since Jan 2019
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 Nov 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 72% phone
- 28% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.08 / 10 · ranked #519,145 of all domains
47 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 15.4 MB · 193 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Iwaki Optical
- Founded: 1948
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on InfoSphere - NTT PC Communications, Inc. (119.245.185.229)
- DNS: sphere.ad.jp
- Email: iwakioptic.co.jp
- Email security: no SPF record, DMARC monitor only
- SSL: GlobalSign, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 10,973,679, 2 hosts
DNS records as swept Nov 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| iwakioptic.co.jp | 10 |
| www.iwakioptic.co.jp | 10 |