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My research focuses on large-scale internet measurement and the characterization of network infrastructure to improve our understanding of internet reliability and performance. I am particularly interested in understanding the physical and logical layers of the internet—-from submarine cables to routing protocols—-to detect outages and quantify the impact of connectivity disruptions. Broadly, I seek to deepen our understanding of the Internet infrastructure, often with a focus on the end-user perspective, and using this knowledge to help build a better, more resilient Internet.
Keywords: Computer networks; Internet measurement; Internet infrastructure; broadband networks; network reliability; distributed systems; content distribution; peer-to-peer systems; Internet-scale system design; deployment and measurement
My teaching focuses on Internet measurement, with a particular interest in integrating multiple network, and often interdisciplinary, datasets to improve our understanding of the Internet. I emphasize hands-on research and supervise student projects that build on the IODA (Internet Outage Detection and Analysis) platform. Through this work, students develop a deep understanding of computer networking and research methodologies as they apply domain knowledge to improve IODA.
Recent publications:
Vaibhav Bhosale, Ying Zhang, Sameer Kapoor, Robin Kim, Miguel Schlicht, Muskaan Gupta, Ekaterina Tumanova, Zachary S. Bischof, Fabián E. Bustamante, Alberto Dainotti, and Ahmed Saeed. “Assessing LEO Satellite Networks for National Emergency Failover.” In Proceedings of the 2025 ACM Internet Measurement Conference, November 2025.
Weili Wu, Zachary S. Bischof, Cecilia Testart, and Alberto Dainotti. “Replication: A Two Decade Review of Policy Atoms-Tracing the Evolution of AS Path Sharing Prefixes.” In Proceedings of the 2025 ACM Internet Measurement Conference, November 2025.
Romain Fontugne, Malte Tashiro, Raffaele Sommese, Mattijs Jonker, Zachary S. Bischof, and Emile Aben. “The Wisdom of the Measurement Crowd: Building the Internet Yellow Pages a Knowledge Graph for the Internet.” In Proceedings of the 2024 ACM Internet Measurement Conference, November 2024. Winner of Community Contribution award.