AS4511 AS5786 AS3257 and AS17175

Those networks are announcing >/29 prefixes... I see about 109 /32 networks... Could their uplinks/peers take care about filtering them? The worst case is AS17175 which is announcing 222 prefixes and has ONE SINGLE route-object?!? Why are those routes comming across the Internet? They should not be announced at all! SOURCE: http://tools.swinog.ch/wwwbin/lookingglass regards, Pascal