Which WAN networks are public and global?

        I am not sure if this is correct, but I call network public and global if anyone can access it any country and use it to access any host in this network.
So, such network should have some central authority to control address policy and addresses must be routable between different operators. Internet, Telephone network, X.25 and Fido are public and global, but there is no global Ethernet for example. Are other WAN networks like ATM, MPLS or Frame Relay global?

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