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FYI a significant chunk of Chinese IP space has been banned (lemmy.ca)

submitted 2 weeks ago* (last edited 2 weeks ago) by [email protected] to c/[email protected]

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Good morning everyone. Just a quick heads up that I've banned a good chunk of IP space in China due to abusive traffic.

I've tried to restrict this where possible to datacenter blocks from Huawei, Tencent, and Alibaba, but China Telecom / Mobile were also heavy sources of suspicious traffic. I doubt we have many (if any) users in China, but if you are affected please let me know.

This has been ongoing for a while and I ignored it initially since the traffic levels were low, but it wasn't anymore.

The ban has very visibly cut our traffic levels:

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[-] [email protected] 39 points 2 weeks ago* (last edited 2 weeks ago)

Too many IPs, so I did it by ASN at cloudflare.

AS4134 Chinanet backbone
AS45102 Alibaba cloud
AS136907 Huawei cloud
AS132203 Tencent
AS4812 China telecom
AS21859 Zenlayer
AS56041 China mobile
AS134762 Chinanet
AS56048 China mobile
AS24444 Shandong
AS38019 Tianjin mobile
AS134810 China mobile
AS56046 China mobile
AS56040 China mobile
AS24400 Shanghai mobile
AS17638 Tianjin provincial net
AS132525 Heilngjiang
AS24547 Hebei mobile
AS4808 Unicom bejing
AS17621 Unicom shanghai
AS56047 China mobile
AS4837 China unicom
AS56042 China mobile
AS9808 China Mobile

There's just no way we have thousands of legitimate but logged out users browsing old.lemmy.ca from their phone in China.

this post was submitted on 17 May 2025

195 points (99.0% liked)

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