NetworkView.owner

Description

The NetworkPlayer who owns this network view.

function OnNetworkInstantiate (info : NetworkMessageInfo) {
    var nView = GetComponent.<NetworkView>();

    if (!nView.isMine)
        Debug.Log("New object instantiated by " + nView.owner);
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void OnNetworkInstantiate(NetworkMessageInfo info) {
        NetworkView nView = GetComponent<NetworkView>();
        if (!nView.isMine)
            Debug.Log("New object instantiated by " + nView.owner);
        
    }
}