What powers karstenmueller.com?

Last seen Oct 2026 · 6 technologies across 6 categories

Caching

Varnish
since May 2026

CDN

Fastly
since May 2026

Email

Mailgun
since Aug 2026

Miscellaneous

Open Graph
since Apr 2023

PaaS

GitHub Pages
since May 2026

Performance

Priority Hints
since Aug 2026

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

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Open Page Rank

2.35 / 10 · ranked #2,771,217 of all domains

16 referring domains · OpenPageRank

Page

  • Language: English
  • CDN: Fastly
  • Weight: 0.1 MB · 5 requests
  • Structured data: JSON-LD, OpenGraph, Twitter Cards

Homepage as crawled by the HTTP Archive, Oct 2026.

Infrastructure

  • Hosted on Fastly (185.199.108.153)
  • DNS: Google Cloud DNS
  • Email: Mailgun
  • Email security: SPF (soft fail), DMARC monitor only
  • SSL: Let's Encrypt, RSA 2048, expires Jan 2027
  • Common Crawl link graph: rank 6,720,920, 2 hosts

DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted

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