What powers optikbuck.de?
Last seen Sep 2026 · 10 technologies across 9 categories
Analytics
Etracker
since Aug 2022
Caching
Hosting
Strato
since Aug 2022
Hosting panels
Plesk
since Aug 2022
JavaScript libraries
Programming languages
Security
HSTS
since Sep 2026
Web servers
Apache HTTP Server
since Aug 2022
Webmail
Microsoft 365
since Sep 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.74 / 10 · ranked #18,162,546 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 0.9 MB · 25 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Industry: Healthcare (declares
Optician)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on HOFMEIR-AS (185.115.24.238)
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (hard fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 70,222,610
- Verified with: Microsoft 365
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted