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Doxx.net raises $38M Series A led by a16z to build private networks for AI agents
The Miami startup is opening its Agentic Defined Networking platform to the public after a closed beta that began in December 2025
Miami-based startup doxx.net has raised $38 million in a Series A round led by Andreessen Horowitz, better known as a16z.
The company wants to give AI agents something most humans never had online: a private network they actually control.
The funding, announced on October 1, 2026, will support the open beta of the company’s platform. The pitch rests on a concept doxx.net calls Agentic Defined Networking, or ADN.
Animo Ventures and Focal.vc also joined the round.
What doxx.net is actually building
Under ADN, users can spin up private networks that run peer-to-peer and need no servers. Each network gets its own DNS root, its own IP allocations, and encrypted channels for communication.
DNS is the system that translates human-readable names into machine addresses. Owning your own DNS root means nobody else decides where your names point.
The platform is built for individuals, businesses, and AI agents alike.
Doxx.net also says its system supports communication without the usual identifiers like email addresses or passwords.
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The closed beta numbers
Doxx.net ran a closed beta starting in December 2025.
During that stretch, the company says the platform blocked more than 38 million potential threats.
The number is a company-reported metric, and it covers potential threats rather than confirmed attacks.
A founder with a long security rƩsumƩ
Doxx.net is led by founder and CEO Barrett Lyon, whose background runs deep in cybersecurity.
Lyon previously founded Prolexic, BitGravity, and Defense.net, among other ventures.
Lyon has framed doxx.net as a response to mounting privacy concerns, arguing that AI is moving deeper into both personal and professional life, and the networks underneath it weren’t built for that job.
a16z partner Joel De La Garza described the platform as a fundamental shift toward a privacy-first internet.
“The internet was never designed for privacy.” – Joel De La Garza, a16z
Animo’s Nico Berardi struck a similar note, saying the platform has the potential to reshape how users interact online.
Why AI agents change the security math
AI agents can increasingly act on their own, booking things, fetching data, and talking to other software without a person approving each step.
Doxx.net’s argument is that traditional networks, dominated by intermediaries, create fresh vulnerabilities once agents start operating independently. Every middleman in the chain is another place where data can leak or be tampered with.
ADN is designed to shrink that exposure by removing centralized servers from the equation entirely.