Connector connecting only to localhost

[Rasael Bervini]

I have this very strange problem with the connection to the server.

I have always tested my application on localhost and it always worked very fine.
The problem is when I try to connect to any other address or ip that isn't "localhost" or "127.0.0.1".
When I try, the connection starts and get's in suspend since I don't close the program.
I have leaved the application there for more than 5 minutes and didn't give any error or exception (I print in the stack trace all the ex)!

This are the DSN that I use to connect, all of them points to my computer but only the first two works!

Connection to: jdbc:mysql://localhost:3306/
Connection to: jdbc:mysql://127.0.0.1:3306/
Connection to: jdbc:mysql://172.19.28.77:3306/

What could be the problem? I have tried it on three different computers on three different networks (and online too) but doesn't work at all!