What powers 
vattenfall.co.uk?
Last seen Sep 2026 · 33 technologies across 21 categories
Analytics
CDN
CMS
Cookie compliance
Documentation
JavaScript Frameworks
JavaScript Graphics
JavaScript libraries
Load balancers
Miscellaneous
Operating systems
PaaS
Programming languages
Reverse Proxy
RUM
Security
Tag Managers
Video players
Web frameworks
Web servers
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. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 *: Restricted (was Allowed)
AI Crawlers
No AI crawlers blocked
Audience
- 54% desktop
- 46% phone
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.15 / 10 · ranked #479,628 of all domains
116 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United Kingdom)
- CDN: Microsoft Azure
- Weight: 0.7 MB · 43 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Vattenfall United Kingdom
- Founded: 2000
- Sector: energy sector
- Country: United Kingdom
From Wikidata (CC0).
Infrastructure
- Hosted on VATTENFALL-AS (91.192.14.204)
- DNS: nuon.com
- Email: vattenfall.com
- Email security: SPF (hard fail), DMARC reject
- SSL: GlobalSign, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 80,312, 17 hosts
- Verified with: Atlassian, Microsoft Dynamics 365, GlobalSign, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| heat-customers.vattenfall.co.uk | 16 |
| corporate.vattenfall.co.uk | 11 |
| network-solutions.vattenfall.co.uk | 11 |
| idno.vattenfall.co.uk | 10 |
| heat.vattenfall.co.uk | 9 |
| www.vattenfall.co.uk | 9 |
Full technology history →
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Recent changes
- dropped Matomo Analytics Jun 2026
- dropped Matomo Tag Manager Jun 2026