Just thinking about all these Telecom peering points.

 

Assuming that Telecom allocate IP addresses as they are requested by incoming broadband connections, as opposed to by geographic peering point, then there will be no way to summarise addresses at these peering points.

 

So this will imply that those ISP which do peer at these points will have to listen to a good 100k odd /32 announcements (at the larger peering points).  I could easily see the routing table having to contain 200k to 300k additional /32 routes if you want to allow least cost routing to work its best.  If there are redundant paths then this could increase a lot more.

http://www.telecom.co.nz/binarys/ngn_consultation_june_2007.pdf