discuss How many aftermarket domains are there?

[garptrader]

I was just curious if we took all the domains at SEDO, Godaddy Auctions, DNS, Flippa, Namejet, etc (plus those directed to a portfolio site or lander but not listed in the traditional marketplaces) and subtracted out the duplicates how many domain names are looking for an end user?

I saw a report there are more than 300 million registered domains. How many are for held by investors?

Any guess by TLD?