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Title: Proxy Services Feast On Ukraine's IP Address Exodus

Link: https://tech.slashdot.org/story/25/06/05/2343...

An anonymous reader quotes a report from KrebsOnSecurity: Ukraine has seen
nearly one-fifth of its Internet space come under Russian control or sold to
Internet address brokers since February 2022, a new study finds. The analysis
indicates large chunks of Ukrainian Internet address space are now in the
hands of shadowy proxy and anonymity services that are nested at some of
America's largest Internet service providers (ISPs). The findings come in a
report that examines how the Russian invasion has affected Ukraine's domestic
supply of Internet Protocol Version 4 (IPv4) addresses. Researchers at
Kentik, a company that measures the performance of Internet networks, found
that while a majority of ISPs in Ukraine haven't changed their infrastructure
much since the war began in 2022, others have resorted to selling swathes of
their valuable IPv4 address space just to keep the lights on. For example,
Ukraine's incumbent ISP Ukrtelecom is now routing just 29 percent of the IPv4
address ranges that the company controlled at the start of the war, Kentik
found. Although much of that former IP space remains dormant, Ukrtelecom told
Kentik's Doug Madory they were forced to sell many of their address blocks
"to secure financial stability and continue delivering essential services."
"Leasing out a portion of our IPv4 resources allowed us to mitigate some of
the extraordinary challenges we have been facing since the full-scale
invasion began," Ukrtelecom told Madory. Madory found much of the IPv4 space
previously allocated to Ukrtelecom is now scattered to more than 100
providers globally, particularly at three large American ISPs -- Amazon
(AS16509), AT&T (AS7018), and Cogent (AS174). Another Ukrainian Internet
provider -- LVS (AS43310) -- in 2022 was routing approximately 6,000 IPv4
addresses across the nation. Kentik learned that by November 2022, much of
that address space had been parceled out to over a dozen different locations,
with the bulk of it being announced at AT&T. Ditto for the Ukrainian ISP
TVCOM, which currently routes nearly 15,000 fewer IPv4 addresses than it did
at the start of the war. Madory said most of those addresses have been
scattered to 37 other networks outside of Eastern Europe, including Amazon,
AT&T, and Microsoft.

Read more of this story at Slashdot.

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