I'll try to explain what I am getting at. Very often a newbie ISP doesn't quite understand what this is all about. They get an ASN cuz everyone else has one. Their upstream does static routing to them so rather than having their /19 show up as AS34567, it shows up as origin=AS11111 (their upstream).
If I go the Oregon router server and look up their /19 and find only 1 path to that /19 or I find that the ASN origin has disappeared and been replaced by their upstream then there is no justification for getting an ASN.
understood the motivation. did not understand the mechanism. in arin-land, i think they actually ask to see proof of dual-homing before issuing the asn. but you want to TEST that it is actually deployed. what is not clear to me is HOW to do that. please take into account the problem of bgp best-path-only propagation. randy