We study the Internet as a global critical infrastructure – the thing the world depends on but barely understands. We make it observable from the outside: without privileged access, and often by turning systems that already exist into measurement instruments, we uncover how today’s Internet actually operates: the hidden dependencies, opaque routing behavior, and fragile links that shape global connectivity.

We pick our own questions, and much of our work is a first look at something that mattered before anyone was measuring it. Our work is grounded in experiment: building systems, deploying them at scale (our tools have been used by over 1.5 million people), and being precise about what the evidence can and cannot tell us. That visibility drives both our understanding of the Internet’s hidden machinery and the design of better, more resilient systems—especially as the Internet’s fate becomes entangled with geopolitics and economics, and routinely put to the test by natural disasters.