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ASPA: making Internet routing more secure

ID: 531dd680-56f1-5de3-9a57-e05745e55528

STIX ID: report--531dd680-56f1-5de3-9a57-e05745e55528

Feed Name: Cloudflare Blog

Date Published: 2026-02-27

Date Updated: 2026-04-27

Author: Mingwei Zhang

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Cloudflare Radar introduces ASPA, a new cryptographic standard that extends RPKI/ROA to verify BGP AS paths and help detect route leaks and certain forged-origin hijacks; the post explains ASPA validation (up-ramp/down-ramp checks), limitations, how to create ASPA objects in RIPE/ARIN, and new Radar features for monitoring ASPA adoption across RIRs and ASNs.

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