As long as you advertise more specific routes, your routes will always win. So not a problem that I can see.
-mel > On Aug 30, 2025, at 5:57 AM, Tom Beecher via NANOG <[email protected]> > wrote: > > 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/ _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/[email protected]/message/D52IYCHZULYXWQCCAOQQJHUFPG6SDBKT/
