Here is a list of them.
http://www.thebingoaffiliates.com/bingo_sites.asp
Amigo Bingo is the parent Bingo. The rest is white labels. They are powered by Parlay. They kinda come and go.
A while back there was some incident with Amigo and a cruise – I am not sure of the details anymore.
Kiwibingo.net and BingoAstro could be trademark problems.