ThanksĀ Ondrej.
I'm not fully understanding your first point. When doing a show route, I do indeed see only [?] forĀ
185.186.206.0/24 - But is this view 'correct' ? Basically I'm trying to collect a list of ASNs originating invalids but if any of them have as-sets in them there is no easy way to check. I'd have to first find all invalids, then any invalid without an ASN do a second 'all' lookup to see which ASN was actually advertising that prefix.
As for the check, I wasn't aware that "roa_check(roa_v4)" alone would work but it looks good so I'll switch to that. Thanks!