According to RIPEStat, 2400::/12 hasn't been seen since Oct 2023, from AS13030 (Init7).
I also cannot seem to see any recent announcement of that anywhere in the usual sources, or my internal data. I would say this was an error on Qrator's part. In that case, what more do I must do? Although it didn't seem to happen here, best practice is to always announce 100% of your allocated IPs at all times. This provides protection against someone announcing an umbrella and pulling traffic for any uncovered space. It's not perfect , but protects against general stupid. On Sat, Aug 30, 2025 at 2:59 AM Pirawat WATANAPONGSE via NANOG < [email protected]> wrote: > Dear Gurus, > > > Radar tool by Qrator [Reference: https://radar.qrator.net ] claims that > Zenlayer Inc. [AS4229] is “umbrella-ing” me by announcing ‘2400::/12’ on > top of my more-specific address block. > The tool classifies it as a type of hijacking. > [Disclaimer: apologies to Zenlayer if you didn’t do it; but that’s the > information I received] > My neighboring organization also has a more-specific block that falls under > The Umbrella too. > > However, other tools (https://stat.ripe.net , > https://irrexplorer.nlnog.net > , https://bgp.he.net , etc.) seem unable to see that particular > announcement. > > Questions: > 1. Is Qrator claim true? (because I have already tried but cannot verify) > 2. If so, should I be concerned? > Even though I already ROA-ed *and* IRR-ed my own block, but if “the other > end” doesn’t validate, it won’t do any good, correct? > (Oh, yeah, the other end also has to somehow “not see” my longer-prefix. > But that can happen as well, no?) > 3. In that case, what more do I must do? > > I would extremely appreciate someone helping me out on this matter. > > > Best Regards, > > Pirawat. > _______________________________________________ > NANOG mailing list > > https://lists.nanog.org/archives/list/[email protected]/message/GT2M54NGQQHRE7IU63ECEOMVTGH7FRIW/ _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/[email protected]/message/47LPGUEA2E2LV3RIRZGEF35KC6SPQ53L/
