Hello ! https://docs.db.ripe.net/Types-of-Queries/Historical-Queries + grep Regards, Dmitry From: Salvador Bertenbreiter <salvadorb@gmail.com> Sent: Thursday, July 16, 2026 2:53 AM To: routing-wg@ripe.net Subject: [routing-wg] Best source for historical RADB AS-SET data Hi RIPE Routing-WG, Does anyone know of an easy way to determine *when* a particular ASN was first added to a specific AS-SET in RADB? More specifically, I am looking for a historical source (besides downloading the entire list of snapshots from ftp.radb.net<http://ftp.radb.net> and comparing) or tool that would allow me to identify the earliest date on which a given ASN appeared as a member of an AS-SET. Thanks in advance for any suggestions. Best regards, Salvador Bertenbreiter