What powers 
michalkosinski.com?
Last seen Sep 2026 · 11 technologies across 6 categories
Analytics
Cloudflare Browser Insights
since Jan 2026
Google Analytics
since Mar 2020
CDN
Cloudflare
since Jan 2026
Font scripts
Google Font API
since Mar 2020
JavaScript libraries
Closure Library
since Oct 2023
Marked
since Jul 2026
Miscellaneous
HTTP/3
since Jan 2026
Open Graph
since Sep 2022
Video players
YouTube
since Mar 2017
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
- Sep 2026 * removed from robots.txt
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
3.53 / 10 · ranked #860,953 of all domains
77 referring domains · OpenPageRank
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 6.1 MB · 133 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.7.214, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC reject, DNSSEC signed
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 2,343,579, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Marked Jul 2026
- detected YouTube Jul 2026
- dropped GoDaddy Apr 2026
- dropped Google Workspace Apr 2026
- dropped Google Sites Jan 2026