I put up some pre-run queries for these prefixes based on the routeviews data at: http://bgpinspect.merit.edu/reports.php But you can probably run these yourself if you like.
From the perspective of atleast the 5 routeviews peers we track(att, level3,aol,sprint,glx), all prefixes are pretty much visible by now, what is perhaps more interesting is that it looks like these(and a bunch more) were being incorrectly announced by AS9802 prior to Aug 30th.
-manish
Date: Wed, 21 Sep 2005 08:38:11 -0400 From: "Hannigan, Martin" <hannigan@verisign.com> Subject: RE: [afnog] ARIN to allocate from 74/8 & 75/8
if it's useful, i'd be happy to report what percentage of my peers have/don't have routes to these prefixes.
I'd be interested.=20
Best, ---------------------