Hi, On Tue, 03 Mar 2026 at 10:13:53 +0200, Hank Nussbacher via NANOG wrote:
We had F5 announce a /24 on our behalf. We then asked F5 to withdraw that /24. Route-views showed the /24 still being announced via an F5 path. F5 claims that route-views is incorrect and the route had been properly withdrawn. They state that public route collectors (including route-views) reflect what their individual collector peers are seeing at a given moment. Due to propagation timing, peer refresh intervals, and collector update cycles, visibility across different monitoring platforms is not always perfectly synchronized in real time.
F5 has a (real time) looking glass (https://lg.as35280.net/) and their BGP communities are documented in their AS object (whois -h whois.ripe.net as35280). It should easily tell you if they actually withdrew your prefix and/or where they're learning it from. Ben -- Benjamin Collet