AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email
A recent analysis of 39 AI companies' DNS records reveals that 17 have completed Anthropic's domain verification process. Additionally, 23% of these companies exhibit weak email security, making them vulnerable to spoofing. The findings highlight the importance of robust domain verification and email authentication in the AI sector.
- ▪17 out of 39 AI companies have completed Anthropic's domain verification process.
- ▪23% of the companies analyzed have weak or absent email authentication, increasing their vulnerability to spoofing.
- ▪Microsoft has deployed 12 separate MCPv1 DNS records, indicating multiple verified services.
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← DomainIntel I scanned 39 AI companies' DNS records — here's who's verified with Anthropic, who's deploying MCP keys, and whose email you can spoof May 20, 2026 · John Leslie · All data independently verifiable with dig 17/39 Anthropic verified 6 MCPv1 deployers 23% Weak email security 12 Microsoft MCP keys DNS records are public. When a company verifies domain ownership with a service provider, that verification lives in their TXT records — visible to anyone who runs dig TXT example.com. These records form a map of vendor relationships that companies may not realize they're broadcasting. I queried the DNS, SSL, WHOIS, and HTTP headers for 39 AI-adjacent domains — labs, safety orgs, tooling companies, prediction markets.
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