Dear PlusNet,
You might be interested in RPKI - The required cryptographic upgrade to BGP routing
Right now "AS6871 accepts RPKI invalid BGP routes from prefix 84.92.0.0/15" as you can see for yourself at https://www.ripe.net/s/rpki-test for example.
Best regards,
K.
PS: I know "Router" is not a correct label for this but it was the less unrelated among the allowed values.