What powers 
viessmann.rs?
Last seen Sep 2026 · 11 technologies across 9 categories
Analytics
CMS
Cookie compliance
JavaScript libraries
Miscellaneous
Programming languages
Security
Tag managers
Webmail
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 71% phone
- 29% desktop
Serbia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.83 / 10 · ranked #700,858 of all domains
45 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Serbian
- CDN: Akamai
- Weight: 1.2 MB · 53 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on ASN-TSI-IAS Internet and VPN Service Provider (93.122.86.52)
- DNS: ns14.net
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 14,535,924, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped core-js Jul 2026
- dropped Microsoft Advertising Jul 2026
- detected Google Tag Manager Mar 2026