What powers carlheath.se?
Last seen Sep 2026 · 12 technologies across 10 categories
CMS
Databases
Font scripts
Miscellaneous
Operating systems
Page builders
Performance
Programming languages
Web servers
Webmail
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Sweden
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.22 / 10 · ranked #1,242,083 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Swedish (Sweden)
- Weight: 0.2 MB · 8 requests
- WordPress theme: twentytwentyfour · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Carl Heath – Musings on the Internet
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on HOSTUP HOSTUP (45.67.15.149)
- DNS: hostup.se
- Email: Proton Mail
- Email security: SPF (soft fail), DMARC reject
- SSL: Let's Encrypt, RSA 4096, expires Oct 2026
- Common Crawl link graph: rank 6,866,076, 3 hosts
- Verified with: OpenAI, Proton
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Cloudflare Jul 2026
- dropped HSTS Jul 2026
- dropped Nginx Jul 2026
- detected Apache HTTP Server Jun 2026
- detected Debian Jun 2026
- detected HTTP/3 Jun 2026
- detected Proton Mail Jun 2026
- dropped The SEO Framework Feb 2026
- dropped Google Font API Dec 2025
- dropped jQuery Dec 2025
- dropped jQuery Migrate Dec 2025
- detected Priority Hints Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025
- detected WordPress Site Editor Nov 2025