Assessing the RPKI Validator Ecosystem

In this work we compare seven currently available Resource Public Key Infrastructure (RPKI) validators regarding their ease of installation, performance, consistency in results, code quality, applicability, and feature-richness. We weigh the different characteristics and rank each validator based on the scores it received during our tests. We find Routinator to perform the best and recommend using this RPKI validator in a production environment. Additionally, we uncover inconsistencies in the validation results between different validators and investigate possible causes. Moreover, we also look at the RPKI repository infrastructure and discuss recent outages.