I see this intermittently on sites using HE tunnels for v6 connectivity. Reddit has never responded to any support tickets opened/filed. Though, overall, defense measures for sites in general have gotten really hostile to HE IP space in the past year or two (likely due to bad actors abusing the free tunnel service) -----Original Message----- From: nanog--- via NANOG <nanog@lists.nanog.org> Sent: Sunday, March 23, 2025 2:36 PM To: NANOG <nanog@lists.nanog.org> Cc: nanog@immibis.com Subject: [NANOG] Re: Blocked by Reddit No idea about this from the network perspective, but I want to point out they started intermittently blocking Tor about the same time they had their third-party app tantrum (i.e. early 2023). You get HTTP 429 and a blank screen. Presumably they're not explicitly blocking Tor, but also not exempting it from standard rate limits, making it useless if other people or systems are also accessing it through Tor. Sometimes you can load a few pages. It feels like Reddit's jumped the shark since that time period, not too dissimilar from Twitter. Some people reported that you can now get your IP address banned for upvoting memes about the Nintendo character Luigi. It might have been worth trying to get unblocked if they were still a serious site, but... FWIW they're allegedly blocking all search engines other than Google, who paid them a lot of money for the exclusive right to show them in results and use them for AI training. That's one reason they suddenly switched to trying to keep everyone out. For a while they were specifically trying to block Microsoft because of OpenAI. On 17/03/25 20:24, John Kristoff via NANOG wrote:
On Mon, 17 Mar 2025 12:02:06 -0700 "Justin H. via NANOG" <nanog@lists.nanog.org> wrote:
Anyone reading from Reddit? We've been getting a "Blocked by Network Security" page for several (presumably all) of our network blocks and a ticket open with support has gotten no useful replies. Sorry if this isn't the response you were hoping for, but maybe a piling on will help highlight that yours isn't an isolated problem.
I've seen this from some random address space too. They seem to dislike some prefixes if they are typically associated with servers for instance, but are perfectly OK with Tor. There seemed to be a change to their blocking about a year or two ago. I've never been much of a reddit user and it seems so arbitrary that I've not bothered to open a ticket with them. Instead I just stop trying to click on reddit links that show up in search engine results. *shrug*
John _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/JK CWRJ2P6CAC6GA26TXFZNUAS5BPUEM3/
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