Paul A Vixie <paul@vix.com> writes: * > Remember, this just looks at the classful routes and tries to cidrize * > them at the origin AS level. It assumes no holes either so it's quite * > possible to get a lot more back. Yes there are 31K classful routes. That' * s * > either a lot of legacy or not a lot of aggregation. * > --Tony * * Given that the routing table stood at 28000 when CIDRD was killed off, I'd * say that there have either been some recent classful allocations, or a lot * of ancient networks suddenly getting advertised.

Or a lot less care and letting classful size announcments leak out and not aggregating to the allocation folks were given. To highlight I pick the last 50 classful entries I see in the 193, 198 and 206 range just to give a random sample and to illustrate.

this is what i was getting at in my note a week ago or so. it appears that many more networks are being announced by 2+ as's. so i'm assuming we're sort of doomed to poor aggregation as more and more people dual-home to providers. and i still see some pretty poor aggregation (like /22's and /24's) in some recent allocations. -brett