this post was submitted on 17 May 2025
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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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[–] Shadow@lemmy.ca 39 points 1 month ago* (last edited 1 month ago) (1 children)

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.