Miami-based networking and security startup doxx.net has raised $38 million in a Series A round led by Andreessen Horowitz. Animo Ventures and Focal.vc also participated in the financing, which coincides with the open-beta release of the company’s Agentic Defined Networking (ADN) platform.
Founded in 2025 by Barrett Lyon, doxx.net is positioning ADN as a networking environment intended to limit risks created when AI agents browse websites, exchange data and take actions using a person’s credentials or delegated authority.
Network controls for autonomous activity
AI agents can interact with online services at machine speed, but they may encounter phishing pages, malware-hosting infrastructure, malicious instructions and other unsafe destinations. Doxx.net said its platform applies connection-level protections intended to stop users and agents from reaching known or newly identified harmful domains before a session is established.
The company describes ADN as a separate, private networking layer rather than a conventional service routed through centralized third-party servers. Its offering includes peer-to-peer communications, end-to-end encrypted messaging and file transfers, API controls for agents, anti-tracking features, and threat filtering.
Doxx.net also operates network components that are generally provided by outside parties, including IP address space, an autonomous system number, DNS infrastructure, a certificate authority and bare-metal servers. The company said customers can use a dedicated naming system within the platform, including custom top-level domains that do not have to be visible on the public internet.
Privacy and identity approach
According to the company, its architecture is designed to reduce the amount of customer activity data accessible to intermediaries. Doxx.net says it does not require usernames, passwords or personal information for account creation, instead using a proof-of-work mechanism.
The platform currently supports iOS, macOS and Android, with Windows and Linux support planned or available through the broader service. Doxx.net said it operates infrastructure across six continents.
In closed beta, which began in December 2025, the company said its filtering technology blocked more than 38 million threats. Those figures have not been independently verified. The new funding is expected to support expansion of the network and further development of controls for AI-agent activity.