Looking for MIX/NOTA members

Hi, I know this is NAnog (Which NOTA may qualify for being in Miami) but I'm in need of help for MIX too. I'm involved with a client that had their range advertised by another AS. We were told by all parties involved that it has stopped, but I still seem to be seeing it on RIPE's MIX and NOTA looking glass. If anyone knows LG's other than RIPE that have access into MIX/NOTA (I did try HE.NET and PCH.NET, they didn't come up with the information I'm looking for) or can do a "sho ip bgp regex _13913$" and email me PRIVATELY, I'd appreciate. Thanks, Tuc