Manntis.com

Sedo.com is one of the largest After Market services. They claim to have over 9 Million domain names in there platform. They do not provide a "list" of domains, but you can use the system they provide to search on there site. You can view all of the current domains that are On Auction Here.

Sister company GreatDomains.com current auction list Here Or you can also just see the domains that are at auction and ending in 24 hours Here.