Live reverse-traceroute health across M-Lab physical sites.

Built from M-Lab's public NDT speed tests and traceroute data, this dashboard compares Internet performance to Google Cloud virtual servers and physical M-Lab measurement servers worldwide, with latency and traceroute-path views refreshed monthly.

Cloudflare and M-Lab speed-test comparisons by geography, destination, and ISP.

Interactive views of CDN, IXP, facility, city, country, and continent-level hypergiant infrastructure growth.

A venue for Internet structure, behavior, and evolution visualizations, co-organized with Paul Barford.

AS-level topology inference

metAScritic treats hidden interconnection discovery as a recommendation problem: measure a small set of strategic links, infer the rest.

Open Internet health monitoring

HERMES repurposes user-driven speed tests to detect performance degradations and localize where problems likely begin.

Manifold views of private backbones

Lightweight latency measurements and Riemannian geometry expose hidden structure in hyperscaler connectivity.

APNIC user-population estimates

Cross-validating APNIC per-AS estimates against independent baselines to understand where the dataset is reliable.

Routing, borders, and state control

BGP and routing-data studies of how political geography, conflict, and state policy shape Internet infrastructure.