Dear RIPE Atlas users, Due to an error in our backend systems, the probe stability tags ("system: IPv4 Stable 30d" etc) had been gradually becoming stale over the past three months, meaning that probes were not gaining or losing these tags when they should. This has now been fixed, so probes are once again tagged appropriately. We have improved our internal monitoring so this kind of issue will be noticed more quickly next time. Apologies for any inconvenience caused. Kind regards, Chris Amin RIPE NCC