Just going to put it out there. Not all of those 3000+ users have accounts and of those that do not all of them use the chat with stranger function at the same time, alot use pm's to chat with people on their friend lists, use private chatrooms or are already in chats with people from using the chat with stranger function most the time youd probably find that those are indeed the only people you are currently able to connect with
Ita largely dependent on who owns it ip over its physical location.
Some ips change hands and the information does not get updated.
If using a proxy doesnt change it try a different proxy server or service.