What powers 
rosenzweig.io?
Last seen Feb 2026 · 3 technologies across 2 categories
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Web servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
4.32 / 10 · ranked #431,744 of all domains
113 referring domains · OpenPageRank
Infrastructure
- Hosted on PRETECS (162.223.228.62)
- DNS: Migadu
- Email: Migadu
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 678,071
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted