Hi, With Daniele Iamartino, we are validating BGP routes with the objects stored in the RPKI. On 2014/07/26, for the routes at the LINX RouteViews monitor, we observe the following set of prefixes that are announced both with the correct origin AS and a wrong origin AS. There are very few of them. We believe they could be anycast where there is no ROA for some origin ASs or they could be misconfiguration/attacks. RIB Dump time: 2014/08/26 08:00 UTC prefix,valid AS,invalid AS 5.128.0.0/14,31200,50923 37.19.8.0/21,49964,198585 94.199.232.0/21,49413,5089 179.61.194.0/23,61440,37692 190.94.182.0/24,262195,18678 193.42.215.0/24,30880,50827 193.227.174.0/24,9051,24634 195.69.144.0/22,1200,41313 200.35.183.0/24,26617,27742 213.192.242.0/23,8903,12541 217.113.242.0/24,197860,20721 217.113.244.0/24,197860,20721 217.113.245.0/24,20721,197860 2a02:2928::/32,39288,197530 Prefixes containing private AS numbers prefix,valid AS,invalid AS 176.56.192.0/19,8426,65489 185.36.76.0/22,8426,65489 194.45.46.0/24,286,64951 2a00:fd00::/32,29695,65026 Any feedback is welcome, Cristel