NANOG 96

NANOG is, and always has been, dedicated to the people who make up the NANOG community. Meet with hundreds of individuals from network engineering, operations, and architecture, who gather in major cities across North America.

Don’t miss this Kentik session at NANOG

Exodus of IPv4 from War-torn Ukraine
Speaker: Doug Madory

The internet of Ukraine, noted for its resilience following the Russian invasion, has been profoundly affected by nearly four years of war. One notable change has been the exodus of a vital national commodity: IPv4 addresses.

This talk details how large amounts of IPv4 space, formerly originated by prominent Ukrainian ASes, have moved out of the country, often with the aide of IPv4 brokers, to some of the biggest American cloud and service providers. The result is a dramatic reduction in Ukraine’s footprint in the global routing table — a new consequence of a protracted war in the digital age.

Lastly, this talk details how a new stricter routing policy by AT&T, put into effect in the past year, has eliminated all of the Ukrainian IPv4 space originated by AS7018 — up until recently one of the biggest destinations for this exodus of address space.