That's a good question. I'm not sure what is the answer to that question. I'll do some investigation and get back to you if I discover an answer. You should email the people at Godaddy as they probably could give you help..
.com / .net / .org / .co.uk / .us / .biz / .tk / .be / .org.uk / .info..
.com, .net, .org, .info, .biz, .us, .in, and .be...
6 > .com.
3 > .ca.
2 > .biz.
1 > .net..
I have some of all 6 main TLDs.
Personally I was never a fan of international ext's. But I still have a few .cn's (I think they have great future)..
I havent really got that big of a collection though...
.com ,.net .org .biz .info .cc .us .de .be .me.uk .tk .co.in .in .co.nz .com.au .net.au .id.au and the strange one .au.com..
I have .com/.net/.co.uk/.co.in/.
And those lovely .be's.
(hopefully some .eu soon)..