> We believe there is a serious issue relating to the equivalent of 56 “/20” networks, with a corresponding 230k IPv4 addresses. The total value of these is approximately $5M to $6M

> Over the past few days, we have observed 52 networks in the ARIN (North-America) area concurrently burst into life. Until this week, all these networks had been dormant (not routed) for a significant length of time. Even more unusual is that a different autonomous system number (ASN), also previously inactive, has announced each network.

> In 48 cases, these are /20 networks amounting to 4096 IPv4 addresses, and in the remaining 4 cases, they are /19 networks with 8192 addresses.

:blobcatthink:

https://www.spamhaus.org/news/article/802/suspicious-network-resurrections
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@absturztaube thanks for the share. For the sake of others reading who may not know about networking and related infrastructures/architectures- would you mind me asking you to tldr this?

@lucifargundam spamhouse got suspicious of 10k+ dormant IPs suddenly bursting in activity. they went ahead and have places most of them onto their drop list and they urge all parties involved to investigate further whats going on.
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