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Romain Fontugne

Location: Tokyo

I am senior researcher at IIJ Research Lab. The focus of my work is on Internet measurements, traffic analysis and network security.

Pages created by Romain Fontugne

The Internet Health Report
The Internet Health Report
Romain Fontugne — 27 Jul 2020

The Internet Health Report (IHR) is an open source project, partly funded by RIPE NCC Community Projects Fund, that monitors AS connectivity. This article is a quick introduction to IHR and shares some good examples of IHR monitoring capabilities. Interested? Take a look at our website ( for more results and send us your feedback. … Read more

BGP Zombies
BGP Zombies
Romain Fontugne — 23 Apr 2019

When withdrawing an IP prefix from the Internet, an origin network sends BGP withdraw messages, which are expected to propagate to all BGP routers that hold an entry for that IP prefix in their routing table. Yet network operators occasionally report issues where routers maintain routes to IP prefixes withdrawn by their origin network. … Read more

Tags: bgp research
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